is a former football player who is currently the Director of Football at Cheltenham Town.

Johnson signed for Watford as an apprentice at sixteen and turned professional at the age of eighteen. After a spell with Malmö FF, he set up a football holiday business and played part-time football. He took his first managerial job at Newmarket Town in 1986. Johnson moved to Cambridge United in 1988 initially as a reserve team manager before working his way up to manager by 1993. He spent two years as Cambridge's manager before moving to Kettering Town. He became the manager of the Latvia national team in 1999. In 2001, Johnson signed with non-League side Yeovil Town. In his first season he won the FA Trophy before guiding the club to the Conference title in the following season. Johnson won another promotion two years later, leading the club to the League Two title. This earned him a move to Bristol City in 2005. In his first full season, Johnson led his team to an automatic promotion to the Championship which earned him the division's Manager of the Year award. The club finished in the play-off positions the following season, losing the 2008 Football League Championship play-off final to Hull City.

He departed the club in March 2010 and would have spells at Peterborough United and Northampton Town. In January 2012, Johnson returned to former club Yeovil Town. After saving the club from relegation, Johnson led the club to the Championship for the first time in its history, beating Brentford in the 2013 League One play-off final. In February 2015, he was relieved of his duties at Yeovil. The following month, he joined Cheltenham Town. He was unable to keep the club in the Football League, but the club returned the following year, winning the National League title. He left Cheltenham in August 2018. The following month, he signed with Torquay United and won the National League South title in 2018–19. The club were relegated in 2022–23, and he left the club by mutual consent in February 2024.