I’m the world’s luckiest grandchild to have a really cool, truly kind, genuinely loving, all-around incredible Grandpa like you. May your birthday measure up to your incredibleness!

You always open your home and your heart to me. That's why I always want to spend time with you. Happy birthday, Grandpa!

May every day bring you joy and wonder! May your birthday be the most special day of the year for you. Happy birthday, Grandpa!

Today is a perfect day to tell you that you're the most considerate, loving and patient person I know. I love you for being you. I hope I will be like you one day! You're my hero. Happy birthday to the world’s best Grandpa! 

Wishing you a long, healthy life, grandpa...filled with joy and wonder! Happy birthday to the greatest Grandpa!

We have inherited what’s good in the world from you. Joy. Love. Kindness. Patience. Thank you for everything. We love you, Grandpa. Happy birthday!

Wishing you life's greatest treasures, Grandpa. You deserve them and so much more! I love you. Happy birthday!

Happy birthday, Gramps! Wishing you a lifetime more of birthdays and, in-between, days upon days of joy, wonder and love.

God truly blessed our family by making you our grandfather. May all your birthday wishes come true! Happy birthday!

Dear Grandpa, may every moment of your birthday be just the way you want — filled with love, joy and celebration! Happy birthday!

You're the world's best Grandpa! I'm so lucky to have a granddad like you! Wishing you many happy returns of the day.

Happy birthday! I can hold my head up high because you're my Grandpa. By example, you've shown me that love, devotion, kindness and strength are always the answer. 

Grandpa, you're my father figure, pal, mentor, advisor, foundation, touchstone and hero (plus my spoiler) — all in one! Happy birthday to the greatest granddad ever!

Happy birthday to a grandfather who has no equal. Nobody compares to you, Gramps!

I don't need a self-help book to get inspired. I just have to hear about your latest passion. Happy birthday to the "World's Most Inspiring Grandfather" year after year.

Happy birthday, Gramps! Watching the delight grow on your face whenever you use the iPad I got you makes me think Apple has actually come up with an app for staying young at heart.