Shigeki Maruyama (丸山茂樹, Maruyama Shigeki; born 12 September 1969) is a Japanese professional golfer.
Maruyama was born in Ichikawa, Chiba, Japan, near Tokyo. He attended Nihon University and turned professional in 1992. He is known for his ever-present smile on the golf course which has given rise to his nickname of the "Smiling Assassin". He began his career on the Japan Golf Tour, quickly becoming one of the leading players on that tour. Two excellent finishes in World Golf Championships events in 1999 helped to earn him membership of the U.S.-based PGA Tour for the 2000 season. He has three PGA Tour victories. At the end of the 2008 season he announced he was returning to Japan after failing to maintain full playing rights on the PGA Tour.
Maruyama was a member of The International Team in the Presidents Cup in 1998 and 2000. He had a 5–0–0 win-loss-tie record in the 1998 matches.
He has featured in the top 20 of the Official World Golf Ranking.
On 5 June 2000, he shot a first round 58 at Woodmont Country Club in Rockville, Maryland while qualifying for the 2000 U.S. Open. This is a record for any competitive event. In recognition of this achievement, his father renamed a golf course he owned in Tochigi Prefecture to the "58 Golf Course".
Professional wins (13)
PGA Tour wins (3)
|No.||Date||Tournament||Winning score||Margin of victory||Runner-up|
|1||15 Jul 2001||Greater Milwaukee Open||−18 (68-65-67-66=266)||Playoff||Charles Howell III|
|2||12 May 2002||Verizon Byron Nelson Classic||−14 (67-63-68-68=266)||3 strokes||Ben Crane|
|3||19 Oct 2003||Chrysler Classic of Greensboro||−22 (65-64-70-67=266)||5 strokes||Brad Faxon|
|1||2001||Greater Milwaukee Open||Charles Howell III||Won with birdie on first extra hole|
Japan Golf Tour wins (10)
- 1993 Pepsi Ube Kosan Open
- 1995 Bridgestone Open
- 1996 Bridgestone Open
- 1997 Japan PGA Championship, Yomiuri Open, Japan PGA Match-Play Championship Promise Cup, Golf Nippon Series Hitachi Cup
- 1998 PGA Philanthropy Tournament
- 1999 Bridgestone Open
- 2009 Golf Nippon Series JT Cup
Results in major championships
|The Open Championship||T14||T10||T28||CUT|
|The Open Championship||T55||CUT||T5||CUT||T30||CUT||DNP|
DNP = Did not play
CUT = missed the half-way cut
"T" = tied
Yellow background for top-10.
|The Open Championship||0||0||0||1||2||3||10||6|
- Most consecutive cuts made – 5 (2001 PGA – 2002 PGA)
- Longest streak of top-10s – 1 (three times)
- Eisenhower Trophy (representing Japan): 1990
- Presidents Cup (representing the International team): 1998 (winners), 2000
- World Cup (representing Japan): 2000, 2001, 2002 (winners), 2003, 2004
- at the Japan Golf Tour official site
- at the PGA Tour official site
- at the Official World Golf Ranking official site