National Boyfriend Day is an unofficial event celebrated annually on October 3 in many countries. It is a day dedicated to boyfriends and appreciating their role in relationships.
The event gained popularity in the 2010's largely from social media platforms.
National Boyfriend Day, formerly known as Boyfriend's Day, is thought to have originated around October 4, 2014, but it only gained widespread popularity in March 2016, when there was a significant boost of over 46,000 tweets celebrating the day.