James Richard Tatro (born February 16, 1992) is an American actor, comedian, writer and YouTube personality. He is the creator and star of the YouTube channel LifeAccordingToJimmy, which has over 3.4 million subscribers and 728 million video views. Tatro writes, produces and directs each of his video sketches with his friend, Christian A. Pierce.

Tatro has appeared in Grown Ups 2, 22 Jump Street, Blue Mountain State: The Rise of Thadland, Boo! A Madea Halloween, and Stuber, as well as the music video for the Lil Dicky song "Freaky Friday". He also starred in the first season of the true-crime mockumentary American Vandal as Dylan Maxwell, which garnered him critical acclaim and a Critics Choice Award nomination. From 2021 to 2023, Tatro had a leading role as Connor on the ABC sitcom Home Economics.