A birthday card is one of the easiest ways to show your in-laws you are glad to be family. A few warm lines go a long way.
Below are 48 birthday wishes for in-laws: a mother-in-law, father-in-law, sister-in-law, brother-in-law, daughter-in-law and son-in-law, plus short, funny and religious messages.
Article contents
- How to Write a Birthday Card for an In-Law
- Short Birthday Wishes for In-Laws
- Birthday Wishes for Mother-in-Law
- Birthday Wishes for Father-in-Law
- Birthday Wishes for Sister-in-Law
- Birthday Wishes for Brother-in-Law
- Birthday Wishes for Daughter-in-Law
- Birthday Wishes for Son-in-Law
- Funny Birthday Wishes for In-Laws
- Religious Birthday Wishes for In-Laws
- How to Sign the Card
- Frequently Asked Questions
How to Write a Birthday Card for an In-Law
- Start with "Happy birthday" and their name. Use what you call them, whether that is "Mom" or "Linda."
- Say one thing you appreciate about them.
- Mention your family. A line about your spouse or kids is a nice touch.
- Sign both names if it is from you and your spouse.
Example: "Happy birthday, Linda! Thank you for making me feel at home from the very first dinner. The kids can't wait to see you Sunday. Love, Sam and Mike"
Short Birthday Wishes for In-Laws
- Happy birthday! So glad you are family.
- Happy birthday to my favorite in-law.
- Wishing you a wonderful birthday and a great year ahead.
- Happy birthday from both of us.
- Happy birthday! We love you.
- Hope your birthday is as kind as you are.
Birthday Wishes for Mother-in-Law
- Happy birthday to the woman who raised my favorite person. Thank you.
- Happy birthday to a mother-in-law who welcomed me like her own.
- Thank you for your kindness, your cooking and your advice. Happy birthday.
- Happy birthday to my mother-in-law. I hit the in-law jackpot.
- Wishing you a birthday as warm as the welcome you gave me.
- Happy birthday! I am grateful for you every day, not only today.
Birthday Wishes for Father-in-Law
- Happy birthday to a father-in-law who made me feel like family from the start.
- Happy birthday! Thank you for raising such a wonderful son.
- Happy birthday to the best grill master in the family.
- Thank you for your advice, your stories and your support. Happy birthday.
- Happy birthday to a father-in-law I am proud to call family.
- Wishing you a relaxing birthday and many more fishing trips.
Birthday Wishes for Sister-in-Law
- Happy birthday to my sister-in-law and my friend.
- I gained a sister when I gained you. Happy birthday.
- Happy birthday to the best sister-in-law a person could ask for.
- Thank you for all the laughs at family dinners. Happy birthday.
- Happy birthday! Our family is better with you in it.
Birthday Wishes for Brother-in-Law
- Happy birthday to my brother-in-law. Glad you are on our team.
- Happy birthday to the brother I got through marriage.
- Happy birthday! Thank you for being such a good husband to my sister.
- Wishing a great birthday to a great guy.
- Happy birthday to my brother-in-law and favorite game-night partner.
Birthday Wishes for Daughter-in-Law
- Happy birthday to our daughter-in-law. We are so happy you are part of our family.
- Happy birthday! You make our son so happy, and that makes us happy too.
- We did not just gain a daughter-in-law. We gained a daughter. Happy birthday.
- Happy birthday to a daughter-in-law we love and admire.
- Wishing you a birthday full of joy. We are lucky to have you.
- Happy birthday to the wonderful mother of our grandchildren.
Birthday Wishes for Son-in-Law
- Happy birthday to our son-in-law. We are glad you are part of our family.
- Happy birthday! Thank you for taking such good care of our daughter.
- Happy birthday to a son-in-law we are proud of.
- We gained a son when you married our daughter. Happy birthday.
- Wishing you a great birthday and a great year ahead.
- Happy birthday to the best son-in-law we could have hoped for.
Funny Birthday Wishes for In-Laws
- Happy birthday to my mother-in-law. I promise I am taking good care of your baby.
- Happy birthday! You are my favorite in-law. Please don't tell the others.
- Happy birthday to my father-in-law. I still think I am winning the argument about the thermostat.
- Happy birthday to my sister-in-law, the only one who laughs at my jokes.
Religious Birthday Wishes for In-Laws
The verse is from the New International Version (NIV). For more, see our religious birthday greetings.
- Happy birthday. We thank God for bringing you into our family.
- May God bless you with health and joy this year.
- Praying the Lord gives you a wonderful year ahead.
- "The Lord bless you and keep you; the Lord make his face shine on you and be gracious to you; the Lord turn his face toward you and give you peace." (Numbers 6:24-26) Happy birthday.
How to Sign the Card
"Love," "With love from all of us," "Love, Sam and Mike" and "Your favorite daughter-in-law" all work. If you are writing with your spouse, sign both names.
Frequently Asked Questions
What do you write in a birthday card for a mother-in-law?
Wish her a happy birthday, thank her for something specific, such as raising your spouse or welcoming you, and sign from both of you.
Should the card come from me or from my spouse and me?
Either works. A card signed by both of you is common, but a card from you alone shows you value the relationship yourself.
What if I am not close to my in-laws?
Keep it warm and simple. "Happy birthday. We hope you have a wonderful day" is enough.
Need more ideas? See our guide to what to write in a birthday card, birthday wishes for Mom, birthday wishes for Dad or use the Message Finder. Our Watercolor Flowers and Birds of America sets are blank inside, so they work for birthday notes too, along with our Happy Birthday Assorted Cards. See all birthday cards.
Birthday wishes by who you are writing to: Mom, Dad, your husband, your wife, your sister, your brother, your son, your daughter, a cousin, an aunt or uncle, a niece or nephew, Grandma, Grandpa, grandchildren and a friend.
