Greg Dixxon, born Gregory Rolfe Armstrong on December 23, 1969, in Escondido, California, USA, is an American adult film actor specializing in gay pornography. He debuted in 2023 at age 54, embodying a mature, dominant 'muscledaddy' role with his muscular, bearded, tattooed physique featuring salt-and-pepper hair. Measuring 6'1" (185 cm) tall and 189 lbs (86 kg), with brown eyes, Dixxon has starred in acclaimed works like Tongue in Cheek (2023), Boys Weekend (2024), Jack of All Trades (2024), Leather Goods (2024), and Tempting Desires (2024).
He appears in series such as The Men, Men at Play, Young Perps, and Raw Fuck Club. Earning six GayVN nominations in 2025 and two in 2026, plus a 2025 XMA Fan Award nod for Favorite Gay Performer, Dixxon maintains a presence on Instagram (@gregdixxon) and X (@GregDixxon). He was a close friend of the late Roman Mercury.