No nicknames, but several spelling variants if Ian by itself isn’t awesome enough for you.
Famous people named Ian:
Actors Ian McKellen, Ian Somerhalder, Ian Ziering, Ian Harding, and Ian Dale; novelists Ian McEwan, Ian Fleming, and Ian Rankin; fashion designer Ian Murray.
Ian reached #67 on the list in 1995 and then again ten years later in 2005; for the past few years it’s been holding steady in the 70s.
If You Like Liam, You’ll Love …, Tiny Three-Letter Boy Names, 25 Variations Of John, Ingenious I Names For Baby Boys, Boy Names People Won’t Shorten, Terrific Two-Syllable Boy Names, Short, Sweet Baby Boy Names, 20 Popular Names From The ‘90s That Are Worthy Of A Comeback,