Nash during an August 28, 2009 preseason game against the Washington Redskins.
| Strength and conditioning coach|
|Date of birth:May 5, 1970|
|Place of birth: New Orleans, Louisiana|
|Undrafted in 1993|
|No regular season or postseason appearances|
| As player:|
* New York Giants (1993)
| As coach:|
* New England Patriots (2005–2010)
(Assistant strength and conditioning coach)
|Career highlights and awards|
|* Super Bowl champion (XLIX)|
Harold Nash, Jr. (born May 5, 1970 in New Orleans, Louisiana) is a current American football strength and conditioning coach for the Detroit Lions of the National Football League (NFL). He is also a former defensive back in the Canadian Football League.
Nash attended St. Augustine High School in New Orleans, Louisiana where he played defensive back. He then attended the University of Southwestern Louisiana, where he went from a walk-on defensive back in 1988 to being voted a permanent team captain by 1992. After spending training camp with the NFL's New York Giants in 1993, Nash moved to the CFL. He first joined the expansion Shreveport Pirates (1994–1995) who folded at the conclusion of the 1995 season. Nash later joined the Montreal Alouettes (1996–1999), but midway through the 1999 season, joined the Winnipeg Blue Bombers (1999–2003) with whom he set a team record for all-time pass knockdowns. He played his final CFL season with the Edmonton Eskimos. In total, Nash recorded 367 tackles and 24 interceptions throughout his CFL career. He was also named a CFL All-Star three times.
After retiring from the CFL after their 2004 season, Nash joined the Patriots as an assistant strength and conditioning coach for their 2005 season. He was promoted to head strength and conditioning coach for the 2011 season.
Nash has a son named Harold Nash III.