International (or National) Boyfriend Day is celebrated every year on October 3.

What the day is

  • It is an unofficial appreciation day dedicated to boyfriends and romantic partners, mostly popular in the US and online communities.
  • The date is fixed each year, so “when is International Boyfriend Day?” almost always refers to October 3, regardless of the weekday.

Why you see “International” vs “National”

  • Different sites and social media users call it International or National Boyfriend Day, but they point to the same October 3 celebration driven largely by online trends.
  • It is not an official UN or government holiday; it grew from social media and online “national day” calendars in the 2010s.

Recent and upcoming dates

  • 2025: National Boyfriend Day falls on Friday, October 3.
  • 2026: Some calendars already list National Boyfriend Day for October 3, 2026 as well.

TL;DR: If you want to celebrate International Boyfriend Day, mark October 3 on your calendar each year.

Information gathered from public forums or data available on the internet and portrayed here.