Jim O'Neil (American football)

Jim O'Neil
Detroit Lions
Title	Assistant head coach/safeties
Personal information
Born	October 26, 1978; Philadelphia, Pennsylvania, U.S.
Career information
College	Towson
Career history
	Albany (2001); Assistant offensive line & tight ends coach; Pennsylvania (2002); Assistant offensive line coach; Northwestern (2003–2004); Graduate assistant; Towson (2005); Defensive coordinator & defensive backs coach; Eastern Michigan (2006–2008); Safeties coach; New York Jets (2009); Defensive quality control coach; New York Jets (2010–2012); Assistant defensive backs coach; Buffalo Bills (2013); Linebackers coach; Cleveland Browns (2014–2015); Defensive coordinator; San Francisco 49ers (2016); Defensive coordinator; Oakland Raiders (2018); Senior defensive assistant; Oakland/ Las Vegas Raiders (2019–2020); Defensive backs coach; Northwestern (2021–2022) ; Defensive coordinator; Detroit Lions (2024-present) Defensive assistant (2024); Defensive assistant/safeties coach (2025); Assistant head coach/safeties coach (2026–present); ;
	Coaching profile at Pro Football Reference

Jim O'Neil (born October 26, 1978) is an American football coach who currently is the defensive assistant for the Detroit Lions. Previously he was the defensive coordinator at Northwestern University and as assistant coach in the NFL for the New York Jets, Buffalo Bills, Cleveland Browns, the San Francisco 49ers and Las Vegas Raiders. He was a coach for numerous college football teams before that.