Twenty-one is an incredible milestone for many reasons – it’s the first step into adulthood, with all its privileges and responsibilities, and the first opportunity to really make a mark on the world. It’s hard to pinpoint all the reasons why 21st birthdays are so special, but we know just how exceptional this unforgettable day is for your loved ones. To help you put your feelings into words and share in the excitement and joy of this special day, our writers here at Styiens have put together a selection of thoughtfully written happy 21st birthday messages, wishes, and quotes for you to choose from. Browse through our selection of birthday messages and find the perfect one to celebrate the 21st birthday of a friend, partner, son, daughter, or anyone in between. Use our category tags to filter wishes by tone, length, and recipient, or try our site-wide search function to find specific words or phrases. Our happy 21st birthday wishes are perfect to use as they are, or built upon for a longer and more personalized birthday wish. No matter how you choose to use them, every 21st birthday wish you’ll find here at Styiens is a surefire way to bring a smile to the face of the happy birthday guy or gal on their big day!
Happy birthday! May this new year bring with it new opportunities to live life to the fullest.
Today is all about you! Take in every minute and enjoy it to the fullest – happy birthday!
You are young, fun, and full of life, and I hope you enjoy these wonderful years to the fullest. Happy birthday to the most amazing son/daughter in the world!
Happy 21st birthday to the most inspiring, kind, and smart 21-year-old I know! Wishing you all the best as you set out on this new chapter of adulthood!
Happy 21st! I hope your day is filled with lots of cake, fun, and presents. Happy birthday!
What a milestone! Wishing you all the best this year — kick it off an awesome birthday you won't soon forget!
Happy 21st to the funniest, kindest, and least adult-like adult I know! Wishing you many more years of fun birthdays ahead!
You may be an adult in every sense of the word, but you'll always be my little boy/girl. Happy birthday to my 21-year-old kid!
You're not a kid anymore, so now would be a good time to start considering my advice! Happy 21st from your dear old dad!
Wishing you all the happiness in the world, and a little bit extra for good measure. Happy birthday!
You're the best 21-year-old we know! Wishing you all the best this year, and a very happy birthday!
To my incredible son/daughter, may your 21st year be filled with love, laughter, success, and great happiness. Have a fantastic birthday!
Just because you're an adult now doesn't mean you have to act like it. Happy 21st birthday!
Today, you're officially an adult! You're now old enough to make your own way in life and to make your own mistakes, but always remember that I'm here for you, no matter what. Happy 21st birthday!
The worst of the awkward phases is behind you, and the best is yet to come! Happy 21st birthday!
Best wishes for a wonderful birthday full of fun, laughter, and all the birthday cake you can handle. Happy birthday!
Happy birthday! I hope you enjoy this special day to the fullest with all the cake, presents, and smiles your heart desires.
At 21 you think you need to have it all figured out, but let me let you in on a little secret – nobody has it figured out, especially at your age. Don't sweat the small stuff, and enjoy this new year and new phase to the fullest. Happy 21st!
You're officially an adult now, so I think it's time to consider behaving like one (but only every once in a while). Happy birthday!
Celebrate a special someone's milestone 21st birthday with one of these beautiful happy 21st birthday wishes and messages. Our selection of heartfelt wishes and messages are the perfect way to show them how much you care, and to let them know you’re thinking of them on their special day. From sweet and thoughtful sayings to funny and lighthearted messages, you’re sure to find the perfect way to wish them a very happy 21st birthday!
View more beautiful birthday wishes
Whether you’re looking for a funny way to wish them a happy 21st birthday, happy sweet 16th, or even a happy 50th, these funny birthday messages are guaranteed to elicit a smile and a laugh. From hilarious jokes to pun-filled sayings, these funny birthday messages are the perfect way to wish your friend a happy birthday and celebrate this exciting day with them!
View more funny birthday wishes for friend
Not quite time yet for a happy 21st birthday? Celebrate your loved one’s 20th birthday in style with one of these thoughtfully written and unique happy 20th birthday wishes, greetings, and messages. From upbeat birthday wishes to heartfelt sayings, you’re sure to find the perfect wish to guarantee that the birthday celebrant starts their special day off right!
View more happy 20th birthday wishes
Celebrate this special milestone birthday with one of these thoughtful and heartfelt happy 18th birthday wishes, sayings, quotes, and greetings! From inspiring messages to funny jokes, you’re sure to find the perfect words to help make their 18th birthday a memorable one. Share your well-wishes and celebrate this very exciting milestone birthday with your loved one!
View more happy 18th birthday wishes