Ian Finnerty (born August 2, 1996) is a retired American competitive swimmer who specialized in the breaststroke and individual medley events.

[5] Finnerty attended Bloomington High School South and was an All-American in the 100-yard breaststroke, 100-yard butterfly, 200-yard medley and the 400 freestyle relays.

As a freshman for the Indiana Hoosiers, he won his first Big Ten Conference Championship title in the 100-yard breaststroke with a 51.75.

He also won the 200-yard breaststroke with a time of 1:50.17, a new Big Ten record for the event, contributed to the first-place finish in the 400-yard medley relay, and became the first male swimmer from Indiana University to sweep the breaststroke events at a single NCAA championships.

[9] As a senior, Finnerty successfully defended his B1G title in the 100-yard breaststroke, making it a clean sweep of all 4 years.

[13] Finnerty was a member of the inaugural International Swimming League (ISL) representing DC Trident.