|Full name||Marco Walker|
|Date of birth||2 May 1970|
|Place of birth||Solothurn, Switzerland|
|Height||1.89 m (6 ft 2 in)|
|FC Basel (fitness coach)|
|1996–1998||TSV 1860 München||53||(3)|
|1998–2000||Tennis Borussia Berlin||55||(5)|
|2000–2002||FC St. Gallen||16||(2)|
|2004–2005||1. FSV Mainz 05||17||(0)|
|2005–2006||BSC Old Boys|
|2007–2009||FC Concordia Basel (assistant)|
|2009||FC Basel (assistant)|
* Senior club appearances and goals counted for the domestic league only.
Walker began playing professionally in 1988 with FC Grenchen before moving to FC Lugano in 1990. In 1992, he signed for FC Basel and his form there earned him a call-up to the Swiss national team and a move to the German Bundesliga with TSV 1860 München in 1996. He moved on to Tennis Borussia Berlin in 1998, then returned to Switzerland with FC St. Gallen in 2000. 2002 saw Walker sign for FC Aarau but he was by no means a first-team regular, playing just six games in his first season and ten in his second. He went back to Germany in January 2004 with 1. FSV Mainz 05 but he struggled there, also. He played 17 games for Mainz, and ten for the reserves. He played for amateur Swiss side, BSC Old Boys Basel, from 2005 until 2006 when he retired.
In 2007, he became assistant manager at FC Concordia Basel, but on 16 January 2009, he was appointed as Christian Gross' assistant at FC Basel. Gross was sacked soon after, however, and Thorsten Fink replaced him. Walker then became fitness coach.