Wondering what to write in a birthday card for your niece? We've got plenty of ideas for birthday wishes for nieces, whether you want something funny or heartfelt. A good birthday wish written in a card or posted to social media should reflect your relationship with her. If you've got a playful relationship, a humorous wish about getting older will put a smile on her face. If your relationship with her is more sentimental, a birthday message about how much she's grown and how proud you are of her will make her feel so special.
Don't be afraid to get creative with these birthday wishes. Add in some personal details about the things you like to do with your niece or a nice family memory. If you're looking for birthday wish ideas for the rest of the family, don't miss our collections of the best birthday wishes for your nephew and the best birthday wishes for your mother-in-law.
Funny Birthday Wishes
- I hope your birthday is happier than a seagull with a french fry! Happy birthday dear niece!
- Getting older is a piece of cake (and a few more candles).
- Remember when birthdays were all about cake and presents? Well, guess what? It still is! Let’s celebrate!
- I spent 3 hours searching the internet for the perfect birthday message for you and then I gave up. Happy birthday!
- Older? Definitely. Wiser? …mmm debatable. Happy birthday!
- I think having me as your Aunt/Uncle is enough of a gift. You're welcome! Happy birthday!
- Is it hot in here? Must be all the candles on your birthday cake.
- Happy birthday to one of the only people whose birthday I can remember without a Facebook reminder.
- Happy birthday to my smart and adorable niece. It’s clear you decided to take after me — what a relief!
- Shhh, don’t tell anyone … but you’re my favorite niece! Enjoy yourself, and have a wonderful birthday.
- Just wanted to be the first one to wish you happy birthday so I can feel superior to your other well-wishers. Happy birthday!
- I think you’re supposed to get wiser with age? But it’s fine, there’s always next year!
- The secret to staying young is makeup — as in, make up an age, then stick with it.
- I was going to get you the best birthday present ever, but I’m too big for the gift box.
- Happy birthday to my wonderful niece. I love you even more than I love coffee, and you know how much I love coffee!
- Happy birthday to the only person in my life who will watch Love Island with me without complaining.
Touching Wishes from Aunt
- From a little girl to a beautiful woman, seeing your journey has been a blessing. Happy birthday dear niece!
- To my dearest niece, on your birthday, I want you to know that you are cherished more than you can imagine. Happy birthday!
- As you grow into a mature young lady, I wish you a journey full of joy, magic, and new discoveries. Happy birthday!
- As your aunt, I’ve seen you grow and I’m proud of what you have become. Happy Birthday to an amazing niece!
- May today and every day be filled with every blessing and grace. You make the world more beautiful just by being in it.
- Life’s what you make it, and I want to make yours as wonderful as possible. Happy birthday, niece!
- I hope you get everything you wish for in the year ahead. Happy birthday, my darling niece!
- To the most lovable niece on her birthday, may your day be as sweet as the bond we share. Happy birthday!
- It’s always a treat to wish happy birthday to someone so sweet.
- You are kind, fierce, and all-around wonderful. Happy birthday to an amazing niece!
- I’m so proud of the meaningful and beautiful life you’re building. Take time to enjoy it, on your birthday and every day!
Beautiful Wishes from Uncle
- Your uncle here wishing you a day filled with love, laughter, and loads of gifts! Happy birthday!
- I love how we don't have to say out loud that I'm your favorite uncle, and you're my favorite niece. Happy birthday!
- Happy, happy birthday to my favorite niece! I can’t wait to give you a gigantic hug. Love always, and I hope today is everything you want it to be.
- Happy birthday to my amazing niece! I love you to pieces, and I’m so proud of all you’ve accomplished thus far. Have the best day!
- Happy birthday, kid! You’re one in a million.
- Life is better with you in the family. Thank you for being you, and happy birthday!
- Happy birthday, dear niece! Your uncle loves you more than you’ll ever know. Enjoy your special day!
- I wish you nothing but happiness and love always — and I hope that I can be one of the people who makes you feel happy, safe, and loved! Happy birthday!
- Happy birthday, niece! May your day be as bright as the smile on your face.
- As your uncle, I’ve been privileged to watch you grow and learn. Here’s to another year of discovering new horizons. Happy birthday!
- Happy birthday to the best niece in the world and beyond!
- To my favorite niece on her special day: Remember when I taught you [insert special memory]? Your journey through life will be just as thrilling.
- Happy Birthday, sweetheart! Your uncle is proud of the wonderful person you’ve grown into.
- To the coolest niece in town, Happy birthday!
- The term “awesome uncle” remains incomplete if there is no “wonderful niece” like you. Happy birthday!
- Your birthday is the first step in a new 365-day journey. Let’s treasure every moment!
Birthday Quotes for Niece
- "Go shorty, it's your birthday." — 50 Cent
- "Birthdays are nature's way of telling us to eat more cake." — Edward Morykwas
- "And though she be but little, she is fierce." — William Shakespeare
- "Every birthday is a gift. Every day is a gift." — Aretha Franklin
- "And in the end, it's not the years in your life that count. It's the life in your years." — Abraham Lincoln
- "You know you’re getting old when the candles cost more than the cake." — Bob Hope
- "When you were born, you cried and the world rejoiced. Live your life so that when you die, the world cries and you rejoice." — Cherokee Proverb
- "The secret of staying young is to live honestly, eat slowly, and lie about your age." — Lucille Ball
- "Age is an issue of mind over matter. If you don’t mind, it doesn’t matter." — Mark Twain
- "You are only young once, but you can be immature forever." — John P. Grier
- "Grow old along with me! The best is yet to be, the last of life, for which the first was made." — Robert Browning
- "The great thing about getting older is that you don't lose all the other ages you've been." — Madeleine L'Engle
Annie O’Sullivan (she/her) covers holiday, gift guide, travel, and lifestyle content at Good Housekeeping. She has a degree in magazine journalism from Syracuse University and previously reported for Runner’s World, NBC New York/NY 4 and Woman’s Day. Annie also has experience writing entertainment news and celebrity-focused content.

Jamie Ballard (she/her) is a freelance writer and editor who covers news, lifestyle, and entertainment topics, including sex and relationships, TV, movies, books, health, pets, food and drinks, pop culture, shopping, and personal finance. She regularly contributes to Cosmopolitan, Woman’s Day, Good Housekeeping, and YouGov, among other publications. When she’s not working, you can find her running, traveling, or scrolling TikTok. Follow her on Twitter.