How old is Justin Gaethje?

Justin Gaethje is 37 years old. He was born on November 14, 1988.

Celebrity profile

Justin Gaethje

“The Highlight,” UFC lightweight champion and two-time interim titleholder

Photo: The White House, Public domain, via Wikimedia Commons

At a glance

The facts people search for most about Justin Gaethje, each with its source. Checked October 26, 2026.

Age
How old is Justin Gaethje?
37 years old¹
Justin Gaethje is 37 years old. He was born on November 14, 1988.

Justin Ray Gaethje is an American professional mixed martial artist, a professional since 2011, who competes in the UFC lightweight division.
He is the first fighter in UFC history to win the interim lightweight title twice and is a former UFC “BMF” titleholder.
He was previously the first and only World Series of Fighting Lightweight Champion.

Justin Gaethje comes up in these episodes:

The Joe Rogan Experience #2569 (full episode, Oct 21, 2026) with Joe Rogan and guest Bill Thompson: the underdog Bill Thompson and a friend bet on against Paddy Pimblett.

Justin Ray Gaethje is an American professional mixed martial artist, a professional since 2011, who competes in the UFC lightweight division.

1 episode so far. See the list above.