You might commonly call someone who shares your birthday a birthday twin. This is the most widely used and understood term in English-speaking regions.
Common Terms for Shared Birthdays
When you encounter someone who celebrates their birthday on the exact same day as you, there are a few friendly and informal terms you can use to acknowledge this unique connection.
Birthday Twins
The most popular and straightforward term is birthday twins. This phrase emphasizes the shared, simultaneous nature of your birth date, likening it to the closeness of siblings born at the same time. It's often used enthusiastically and conveys a sense of shared camaraderie.
- Usage Example: "Wow, we're birthday twins! What a coincidence!"
- Why it's popular: It's easy to understand, universally recognized, and friendly.
Birthday Buddy
Another amicable option is birthday buddy. This term suggests a companion or friend with whom you share this special day. While perhaps less common than "birthday twin," it's a perfectly acceptable and warm way to refer to someone who shares your birthday.
- Usage Example: "Happy early birthday, birthday buddy!"
- Connotation: Friendly, informal, and emphasizes companionship.
Irish Twins (A Specific Case)
Less frequently, the term "Irish twins" is encountered in contexts related to birthdays, though its primary meaning is different. "Irish twins" typically refers to siblings born within the same calendar year or very close together, often less than 12 months apart. When applied to birthdays, it might sometimes be used loosely to describe people who share the same day and month but were born in different years, usually with only one year separating their births. However, for a general "same birthday" scenario regardless of the year difference, "birthday twin" or "birthday buddy" are far more appropriate and common.
Summary of Terms
| Term | Common Usage | Specific Nuance |
|---|---|---|
| Birthday Twin | Most common term for someone sharing your birthday. | Emphasizes a shared, unique connection on the same date. |
| Birthday Buddy | Friendly, informal term for a person with the same birthday. | Highlights companionship and a shared celebration. |
| Irish Twin | Rarely used for general shared birthdays; refers to siblings born close together (e.g., within one year). | Can be occasionally used for same day/month, one year apart, but not widely for general same birthdays. |
Knowing these terms allows you to easily acknowledge and celebrate the unique bond with someone who shares your special day.
