Sergejs Semjonovs (born 15 March 1959) is a Latvian football manager and a former footballer. He played as a defender.
Sergejs Semjonovs was one of the most reliable defenders in Daugava Rëga coached by JÃÂnis Skredelis in mid-1980s when the club was one of the strongest sides in the Soviet first league. He played 9 seasons with Daugava, capping 340 appearances and scoring 3 goals. After the collapse of the Soviet Union Semjonovs played for some time with a club in Poland, in 1995 he retired from playing and switched to coaching.
In 1995 Semjonovs was appointed the second coach of Amstrig Riga (later â Daugava), after four years he left for FK Ventspils where he worked for six seasons as coach of the reserves squad. Before the 2005 Virslëga season Semjonovs was appointed head coach of FK Ventspils but in the middle of the season he left the club. He worked with the reserves of FK Rëga until middle of the 2006 season when he was selected head coach. In October 2007 when the results of FK Rëga were getting worse, there were rumours in the Latvian press that Semjonovs would be asked to leave FK Rëga, however with Semjonovs as head coach FK Rëga achieved its best placement in Virslëga so far by finishing third as the best Riga club in front of Skonto FC.