When you need to write 21st birthday wishes, keep in mind that turning 21 is a milestone, so your birthday message should be epic. Need ideas? Get inspired by 100+ original examples of 21st birthday greetings on this page.
Congratulations on turning 21. Now you're old enough to pay for your own drinks.
Bravo, you're 21 and legal! Time to throw out your collection of fake IDs. Happy 21st birthday!
May you live long, prosper early, laugh heartily and love deeply. Happy 21st birthday!
Hope your 21st birthday, plus all the benefits and privileges that come with it, exceeds your expectations.
May your 21st birthday be filled with the joy, wonder and excitement of the wonderful times to come.
I'd like to raise a toast to your 21st birthday and all the toasts we can raise now. Cheers!
Happy 21st birthday! Be strong, be kind, be free, be responsible and, above all, be yourself.
Happy birthday. Now that you're 21, I have one piece of advice: keep laughing. It'll keep you young!
Wishing you a life as exciting, cheerful, liberating, insightful and brilliant as your 21st birthday.
Happy birthday! Remember, we are always here for you — today and every day for the rest of your life.
Happy birthday! May each experience you have in life be as
great as today, the day you turned 21.
Don't sweat your ascent into adulthood! You're not over the hill yet. Happy 21st birthday!
Step 1: Enjoy your 21st special day. Step 2: Repeat Step 1 every other day in your life. Happy 21st birthday!
Happy 21st birthday! Your future looks bright. Become the shining example I know you can be.
Happy 21st birthday! Lie back, relax and don't fret about the future — you've got all time in the world!
Wishing you all the best — drinks and luck at the casino — on your 21st birthday.
Enjoy your 21st special day and start having the time of your life! Happy birthday!
Hope you find your mission in life and make the most of your time here, starting today. Happy birthday.
Do you believe in magic? I do. You're magic! You can cast a spell over anyone! Happy 21st birthday!
Happy birthday! You'll know you're doing the right thing today and every day...if it makes you feel good!
Happy 21st birthday! Let's make your party a celebration you'll never remember (in a good way).
Happy 21st birthday! Time to celebrate this milestone day in style!
Happy 21st birthday! The fun begins now. You're 21, after all!
Let me be the first to welcome you to the roaring 20s. Happy 21st birthday!
Happy 21st birthday! Gen Z just keeps getting better and better, because of you!
Happy 21st birthday! Gen Z is so much better than old gen.
Happy 21st birthday! You're legal at last. Let's toast to it!
Happy 21st birthday! There's now a grownup in the house!
Happy birthday! You're 21 and it's fun, fun, fun!
Happy 21st birthday! Look out world, here she comes! My little baby is 21!
You're 21 and oh so ready to rock! Happy 21st birthday!
Happy 21st birthday! 21 is just the beginning of your glorious journey!
Happy 21st birthday! 21 looks amazing on you, especially on your newly printed I.D.!
21st Birthday Wishes - Son or Daughter -
When I turned 21, the times were simpler, slower...and boooring! Today, 21 is your ticket to a new and exciting world. It's time to celebrate! Happy 21st birthday!
May your 21st birthday be even more wonderful than you ever expected. If there's anyone who deserves a truly special day, year and life, it's someone as special as you.
Although you're 21 now, you still can't wait to blow out your candles, eat your birthday cake and open your gifts. It looks like you already have your priorities straight. Happy 21st birthday!
When you were a kid, you couldn't wait to grow up, be an adult and do whatever you wanted. Today, you're 21, all grown up, an adult and able to do whatever you want. Now what?
You've just turned 21. Your whole life is ahead of you. Take the road less traveled and stop along the way to enjoy the scenery. Happy 21st birthday!
At 21, a whole new era, filled with adventures, mishaps and life lessons, is about to start. Enter with your eyes and heart open. Happy 21st birthday!
Your life is just about to pick up speed and blast off into the stratosphere. Wear a seat belt and be sure to enjoy the journey. Happy 21st birthday!
Happy birthday! Making 21st birthday wishes yet? Don't forget to wish for more love, peace and happiness than you and the world will ever need.
Happy 21st birthday! May your 21st special day be 21 times more special than your first birthday...and as amazingly special as you are.
Happy 21st birthday! You're now entering the serious adult world. Before you close the door on your youth, take a few souvenirs to stay young at heart in the years to come.
At 21, the whole wide world is at your feet. You can now legally do a world of good or bad. Do the right thing. Happy 21st birthday!
Don’t look back and count the years. Live in the present and count all the birthdays ahead of you! Happy 21st birthday!
Happy 21st birthday! This is a wonderful time for you to experience life to the fullest, make mistakes and learn some important lessons. Don’t waste a second.
Every day for the past 21 years has been special to us because we've shared them with you. Enjoy every moment of your special day as much as we've enjoyed our time with you. Happy 21st birthday!
Happy 21st birthday! Now you're old enough to prove to the world that you're the loving, dependable, caring, mature grown-up I've always thought you could be!
Happy birthday! At 21, you’re just at the threshold of adulthood and all the wonderful things that come with it. Start counting your blessings!
Happy 21st birthday! Ignore the distance you've traveled in years. Instead, map out your future and look forward to what's down the road.
Happy 21st birthday! You’ve reached a major juncture in your life. Say goodbye to childish things. Say hello to the world of grownups! Let the adventure begin!
Happy birthday! One of the most important days in your life is finally here — you’re 21 now. It's time to strike the perfect balance between being an adult at life, a child at play and a romantic at heart. I know you can do it!
Happy 21st birthday! You might not have all the answers — now or ever — but it won't matter anyway. Keep asking questions and you'll do just fine.
Watch out, world. The 21 club has a new member who's poised to be a superstar. Yep, I'm talking about you. I can't wait to see you really shine! Happy 21st birthday!
You've always made us very proud. You’ve always stood out from the crowd. May you always be unique, whatever comes your way in the years ahead. Happy 21st birthday!
Happy 21st birthday! To us, you're a superstar. Whatever you choose to do or be in life, we're certain that you’ll always do your best.
Happy 21st birthday! You may be a grownup now, but you'll always be, in my heart, my little angel who wants to do good in the world. May you always be kind and loving.
Happy 21st birthday! Sweet child of mine, I'm so proud of the strong, yet gentle soul you've become. As you enter this next stage of your life, I hope you will always be the incredible person you are now.
Happy 21st birthday! You will forever be my little darling, but you'll also be the wonderful soul with a warm heart that can take on the world with kindness and love. You are a remarkable person.
Happy 21st birthday! You're 21 and a grownup, but you’ll be my baby forever. I will love you always.
Happy 21st birthday! From the day you were born 21 years ago to right now, you've always been an old soul with the heart of an angel. May you always be so blessed.
Happy 21st birthday! You've been wonderfully special since the day you were born. Watching you grow up and become even more special every day has filled me with such pride and joy. May all your tomorrows be as special as you are.
Happy 21st birthday! All your life, you've persevered through good and bad times. Here you are today, about to enter adulthood, as strong and resolute as ever. You truly inspire me.
21st Birthday Wishes - Friends -
At your age, you have the rest of your amazing life right in the palm of your hands...along with a stiff drink and a one-arm bandit slot machine. Happy 21st birthday!
Wishing you a lifetime of all the things that matter most! More than anybody else I know, you deserve the best. Happy 21st birthday!
Congratulations! You have made it through 21% of your amazing life. Now enjoy 100% of the remaining 79%. Happy 21st birthday!
Take pride in what you've already accomplished in the past and look forward to everything you'll achieve and enjoy in the future. Happy 21st birthday!
Turning 21 is a major milestone. It's so much more than the legal privilege of buying a martini. It's the first day of your journey into the world of adults. May yours be filled with joy and adventure. Happy 21st birthday!
Even though you're 21 now, I'm certain that you'll still be carded at bars and casinos. You look too young to be in the 21 club! I wish you all the best in the world, including eternally young looks!
Happy 21st birthday! You're a grown up now, but that doesn’t mean you have to stop having fun. Today is actually the beginning of your next big adventure.
Happy 21st birthday! Say goodbye to your childhood. This is the first day of the rest of your adult life. It's going to be a blast!
You definitely have more than 21 reasons to be thankful for celebrating another year in your life. But I’m thankful for just one reason — you! Happy 21st birthday to my favorite person!
You are now 21, the age many people start expecting more from you. Don’t sweat it — you have the rest of your 20s to mess up, bounce back and show everyone what you've got. Happy 21st birthday.
You and I have had some crazy times. There’s no reason we should stop now. We're still young, so let’s live it up and make your 21st birthday the craziest ever!
Happy 21st birthday! This special day is the most special one you've ever had — and should not go unnoticed and uncelebrated. It's time to call out reinforcements and mark this milestone in your life with the right amount of reverence!
Wow, those 21 years of yours just flew. If time flies when you're having fun, I hope the next 21 fly faster than the speed of light. Enjoy every precious second. Happy 21st birthday!
Happy 21st birthday! Turning 21 is a big milestone, but it's just the first of many more in your life. You're going to be amazing, my friend.
Happy 21st birthday! Hope your future is packed with good friends like us, great times and extraordinary joy.
Happy 21st birthday! You're 21, so you're now an adult! In time, you will see blue skies and black nights, failure and success, heartache and love, kindness and cruelness. But today is your birthday, so there are only good times ahead.
Congrats! Happy 21st birthday! You're 21 and all grown up. Be your best.
Happy 21st birthday! As your pal, it is my duty to tell you that anything is possible in the years ahead. Nothing's impossible.
It’s your 21st birthday, so I'm buying the drinks. Tomorrow, it's your turn, because you can do it legally! Happy 21st birthday!
Happy 21st birthday! Now that we're both adults, we can rule the world together or, at the very least, do what we want.
Happy 21st birthday! May all your days be as life-changing as this one. Now let's drink! I've been waiting 21 years for this moment.
21st Birthday Wishes - Funny -
Now that you're 21, you've got plenty of catching up to do in the drinking department. Happy 21st birthday!
Hooray, you're 21! Happy birthday! You now have the legal right to drink, gamble, rent a car and still get your parents to pay for it all.
Wishing you a "Happy 21st Birthday" welcome to a world of drunken nights, lost weekends and wild spring breaks!
Wow, you're 21. You can do so much now. But don't do everything all at once. Spread it out — you have many years and hangovers ahead of you! Happy birthday!
The best years are yet to come. If not, a little bourbon, scotch and beer wouldn't hurt you. Happy 21st birthday!
You're celebrating your 21st birthday in the 21st century. What more could you ask for? Maybe 21 beers or 21 at blackjack?
Happy 21st birthday! Now you can legally do the things you’ve secretly done since you were a teenager. Not as interesting, eh? Welcome to adulthood.
Happy birthday! It seems like only yesterday you were just a clueless kid. Now you are 21 and have the legal right to drink and act like a clueless kid.
Happy 21st birthday! At your age, you can still say or do anything you want and get away with it...because nobody's going to take you seriously anyway!
Happy 21st birthday. Now we can go to Vegas, gamble all day, party all night...and you have the legal right to pick up the whole tab!
There's no reason to behave like an angel today. It's your 21st birthday, so have fun, fun, fun until Daddy takes your credit card away.
Happy 21st birthday, my dear child. You're the reason I get up early every day. I have to — you'd flunk out of every university course if I didn't get you out of bed and off to class every morning.
Hints & Tips
How do you write 21st birthday wishes?
What makes a birthday greeting milestone worthy? For a 21-year-old birthday girl or boy, this means that you need to write 21st birthday wishes that bring a sense of pride, inspiration, confidence, comfort and joy to him or her. "Drinking" jokes won't cut it.
At the age of 21, it's quite hard to navigate the world of young adulthood. A sense of pride, inspiration, confidence, comfort and joy could make all the difference. Accordingly, write 21st birthday wishes that can do it all.
When someone turns 21, they legally become an adult in many countries, with the legal right, for example, to buy and drink alcohol, gamble, vote, even rent a car.
At 21, many boys and girls also have the money and desire to indulge in these activities. This can make hitting 21 a mixed blessing for them, especially if they indulge a little too much.
This mixed blessing, though, is what makes this milestone terrific fodder for funny or serious 21st birthday wishes.
Accordingly, 21st birthday wishes can be funny or serious, but they should never be dull, unoriginal or predictable.
Which route should you take? It depends...
If the birthday boy or girl can take a joke, send 21st birthday wishes that poke fun at them (about, say, now picking up the bar tab or losing constantly at the casino tables).
When you go the "funny" route, write 21st birthday wishes with a light-hearted tone. Nobody likes mean-spirited insults cloaked in jokes (in other words, the old "truth in jest" route).
Insults are just offensive, and you don't want to be offensive. You want to be funny with your 21st birthday wishes.
If the recipient of your birthday greeting is the serious type, the "birthday message" playing field opens up quite a bit.
You can write 21st birthday wishes that are clever, cool, inspirational or sentimental in tone.
You could simply encourage the birthday boy or girl to grow up, if you think he or she lacks the maturity of a typical 21 year old.
You could also write 21 birthday wishes with the opposite slant: a message that congratulates him or her about their mature, responsible attitude.
You can even opt for 21st birthday wishes that welcome the birthday boy or girl to young adulthood.
Kevin, the "Message Guy" who writes the birthday wishes, quotes, poems, toasts and speeches on BirthdayMessages.net, has been a content writer since 1993. He created this site in 2012 to share the power of words with you on one of the best days of the year — the birthday of a loved one.