Jeremiah "Jerry" O'Connell (born February 17, 1974) is an American actor, best known his roles in the TV series Sliders, Vern Tessio in the film Stand by Me, Charlie Carbone in Kangaroo Jack, Ben in Obsessed and Detective Woody Hoyt on the drama Crossing Jordan.

O'Connell was born in New York City, the son of Linda (née Witkowski), an art teacher, and Michael O'Connell, an advertising agency art director. His maternal grandfather, Charles S. Witkowski, was the mayor of Jersey City, NJ. O'Connell is of Irish descent on his father's side and Polish ancestry on his mother's. O'Connell was raised in Manhattan with a younger brother Charlie O'Connell, also an actor. O'Connell began his acting career at a young age. As a child, he did commercial work for Duncan Hines cookies. Shortly after at the age of eleven, he landed his first feature film role as the character Vern Tessio in Rob Reiner's Stand by Me. As a teenager, he starred in the Canadian TV series My Secret Identity from 1988-91, and attended Manhattan's Professional Children's School.

O'Connell attended New York University (NYU) from 1991 to 1994, majoring in film. While there, he studied screen writing and competed on the NYU fencing team, serving a stint as captain of the sabre squad. However, he left NYU several credits short of graduation in 1999.