Marcus Warren Haber (born January 11, 1989) is a Canadian professional soccer player who plays as a striker for Thai League 1 club Nongbua Pitchaya, on loan from Chonburi.

Haber began his career at local club Vancouver Selects, playing four years with the youth team.

In 2006, he joined FC Groningen of the Dutch Eredivisie as a youth player, and spent two years with the club's under-19 team.

Named Rookie of the Year in the USL First Division, he then joined the Championship club West Bromwich Albion for an undisclosed fee in January 2010.

He returned to West Brom ahead of the 2010–11 season, but was loaned out for a third occasion, this time to Scottish Premier League club St Johnstone.

[3] He then joined Vancouver Selects in 2002, progressing through the youth academy there, where he helped lead his local team to a national championship in early 2006.

[3] In the summer of 2008, Haber joined English League One club Leeds United on trial, participating in their pre-season tour to Ireland ahead of the 2008–09 season.

[3] After unsuccessfully searching for a club in Europe, Haber returned to Canada, and subsequently joined the Vancouver Whitecaps on February 11, 2009.

[20][21] In the first leg of the USL-1 Championship Series, Haber scored in a 3–2 home defeat to Canadian rivals Montreal Impact on October 10, 2009.

[25] After impressing during the trial, Haber signed for West Brom for an undisclosed fee, agreeing to personal terms and passing his medical on January 12, 2010.

[28] Having made just two reserve appearances for West Brom due to a spate of postponements because of adverse weather conditions,[29] Haber moved to League One club Exeter City on a month-long loan deal on February 18, 2010, to gain first-team experience.

[30] He made his debut for Exeter in the club's 1–0 home defeat to Stockport County two days after signing, coming on as a 60th-minute substitute in the match.

[32] After just four months in England, Haber returned to Canada, rejoining Vancouver Whitecaps on April 9, 2010, on a two-month loan deal.

[29][33] West Brom believed the loan move would enable Haber to get more game time[29] — "Marcus joined us in January but it took around a month for international clearance to be granted and then several reserves fixtures were called off due to the bad weather.

[36] On signing Haber for the season, St Johnstone manager Derek McInnes stated — "West Brom have high hopes for him but having stepped up a level into the Premiership they wanted him to go out on loan rather than be kicking his heels at The Hawthorns.

[37] Haber made his competitive debut for the club in a 1–1 draw against Hearts on August 14, 2010, playing the opening 72 minutes of the match.

[39] After making 14 appearances, and scoring twice, during the first three months of the season,[40] Haber snapped his anterior cruciate ligament in a 3–0 home defeat to Kilmarnock on November 6, 2010, turning "awkwardly on the slick McDiarmid Park surface" in "an innocuous incident".

[46] After appearing predominantly as a substitute during the early months of the season, Haber scored his first goal in a 3–1 victory over Hibernian on November 26, 2011.

[47][48] He went on to score one further goal during the season, a late consolation strike as St Johnstone were beaten 2–1 at home to Aberdeen on December 13, 2011.

[79] In the following match on July 10, Haber would set a new club record, scoring 4 goals in a 9-0 rout over Asia Euro United.

[81] On January 16, 2022, it was announced that Haber had signed with Cambodian Premier League club Preah Khan Reach Svay Rieng.

[90][91] They lost in the semi-final stage to the eventual gold medal side,[92] going down 3–1 to their Mexican counterparts, with Haber scoring Canada's solitary goal to briefly restore parity in the match.

[93][94] Haber made his debut for the senior side in a 2–2 friendly against Ukraine at the Valeriy Lobanovskyi Dynamo Stadium on October 8, 2010, coming on as a 73rd-minute substitute for Olivier Occéan.

[98] Haber earned his third senior cap in February 2012,[99] when he replaced Julian de Guzman in the 82nd minute as Canada lost 3–1 in a friendly match against Armenia in Limassol.

[100][101] In March 2013, he was named in the 21-man senior squad for friendly fixtures against Japan and Belarus, with both games taking place in Doha, Qatar.