Marcel Siem (born 15 July 1980) is a German professional golfer who plays on the European Tour.
Siem was born in Mettmann. He turned professional in 2000 and joined the European Tour in 2002. His first win on the European Tour came at the 2004 Dunhill Championship. Siem then had to wait eight years before picking up his second win in 2012 at the Alstom Open de France. This victory ensured Siem's place in the 2012 Open Championship and his first appearance in a World Golf Championship at the WGC-Bridgestone Invitational. His best year end ranking on the Order of Merit is 14th in 2012.
In March 2013, Siem won for the third time on the European Tour at the Trophée Hassan II in Morocco. He went wire-to-wire to win by three strokes over David Horsey and Mikko Ilonen. Marcel finished the tournament 51st in the world, just missing out on an invitation to his first Masters.
In November 2014, Siem claimed victory at the BMW Masters, the first event of the Race to Dubai finals series and his fourth overall on the European Tour. He won in a sudden death playoff over Ross Fisher and Alexander Lévy with a birdie on the first extra hole.
Siem represented Germany at the World Cup in 2003, 2004, and 2006. In 2006 he was Bernhard Langer's teammate in the second winning German team in the World Cup.
- 1999 Spanish Amateur Championship, Sherry Cup (Spain)
Professional wins (5)
European Tour wins (4)
|Race to Dubai finals series (1)|
|Other European Tour (3)|
|No.||Date||Tournament||Winning score||Margin of
|1||25 Jan 2004||Dunhill Championship||−22 (65-67-68-66=266)||Playoff||Grégory Havret, Raphaël Jacquelin|
|2||8 Jul 2012||Alstom Open de France||−8 (68-68-73-67=276)||1 stroke||Francesco Molinari|
|3||31 Mar 2013||Trophée Hassan II||−17 (64-68-69-70=271)||3 strokes||David Horsey, Mikko Ilonen|
|4||2 Nov 2014||BMW Masters||−16 (68-66-65-73=272)||Playoff||Ross Fisher, Alexander Lévy|
European Tour playoff record (2–0)
|1||2004||Dunhill Championship||Grégory Havret, Raphaël Jacquelin||Won with birdie on third extra hole|
Havret eliminated by birdie on second hole
|2||2014||BMW Masters||Ross Fisher, Alexander Lévy||Won with birdie on first extra hole|
Other wins (1)
- 2006 WGC-World Cup (with Bernhard Langer)
Results in major championships
|The Open Championship||T27||CUT||CUT||CUT|
CUT = missed the half-way cut
"T" = tied
|The Open Championship||0||0||0||0||0||0||4||1|
- Most consecutive cuts made – 2 (twice)
- Longest streak of top-10s – 0
Results in World Golf Championships
Results not in chronological order prior to 2015.
QF, R16, R32, R64 = Round in which player lost in match play
"T" = tied
- Eisenhower Trophy (representing Germany): 1998, 2000
- World Cup (representing Germany): 2003, 2004, 2006 (winners), 2013
- Royal Trophy (representing Europe): 2012