| Yoshiaki Maruyama 丸山 良明 | |
| Fullname: | Yoshiaki Maruyama |
| Birth Date: | 12 October 1974 |
| Birth Place: | Machida, Tokyo, Japan |
| Position: | Defender |
| Youthyears1: | 1990–1992 |
| Youthclubs1: | Teikyo High School |
| Youthyears2: | 1993–1996 |
| Youthclubs2: | Waseda University |
| Years1: | 1997–2001 |
| Clubs1: | Yokohama F. Marinos |
| Caps1: | 17 |
| Goals1: | 0 |
| Years2: | 2000 |
| Clubs2: | →Montedio Yamagata (loan) |
| Caps2: | 35 |
| Goals2: | 0 |
| Years3: | 2002–2005 |
| Clubs3: | Albirex Niigata |
| Caps3: | 114 |
| Goals3: | 1 |
| Years4: | 2006–2007 |
| Clubs4: | Vegalta Sendai |
| Caps4: | 12 |
| Goals4: | 0 |
| Years5: | 2008 |
| Clubs5: | AC Nagano Parceiro |
| Caps5: | 14 |
| Goals5: | 1 |
| Years6: | 2009 |
| Clubs6: | Chonburi |
| Caps6: | 12 |
| Goals6: | 1 |
| Years7: | 2010–2011 |
| Clubs7: | Thai Port |
| Caps7: | 7 |
| Goals7: | 0 |
| Totalcaps: | 211 |
| Totalgoals: | 3 |
| Manageryears1: | 2020 |
| Managerclubs1: | Cerezo Osaka U-23 |
is a former Japanese football player.
Maruyama was born in Machida on October 12, 1974. After graduating from Waseda University, he joined J1 League club Yokohama Marinos (later Yokohama F. Marinos) in 1997. He played center back in 1997 when Masami Ihara and Norio Omura left the club for Japan national team. However he could hardly play in the match from 1998. In 2000, he moved to J2 League club Montedio Yamagata on loan. He played as regular center back. In 2001, he returned to Yokohama F. Marinos. However he could hardly play in the match. In 2002, he moved to J2 club Albirex Niigata. He played as regular center back and the club won the champions in 2003 and was promoted to J1 from 2004. However his opportunity to play decreased for injury from 2004 and he left the club end of 2005 season. After rehabilitation in 6 months, he joined J2 club Vegalta Sendai in July 2006. However he could hardly play in the match for injury. In 2008, he moved to Regional Leagues club AC Nagano Parceiro and played in all matches in 2008 season. In 2009, he moved to Thailand and played for Chonburi (2009) and Thai Port (2010-11). He retired end of 2011 season.
| Club performance | League | Cup | League Cup | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Club | League | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |
| Japan | League | Emperor's Cup | J.League Cup | Total | |||||||
| 1997 | Yokohama Marinos | J1 League | 8 | 0 | 0 | 0 | 6 | 1 | 14 | 1 | |
| 1998 | 4 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | |||
| 1999 | Yokohama F. Marinos | J1 League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2000 | Montedio Yamagata | J2 League | 35 | 0 | 2 | 0 | 0 | 0 | 37 | 0 | |
| 2001 | Yokohama F. Marinos | J1 League | 5 | 0 | 0 | 0 | 2 | 0 | 7 | 0 | |
| 2002 | Albirex Niigata | J2 League | 40 | 0 | 3 | 0 | colspan="2" | - | 43 | 0 | |
| 2003 | 44 | 1 | 3 | 0 | colspan="2" | - | 47 | 1 | |||
| 2004 | J1 League | 19 | 0 | 1 | 0 | 1 | 0 | 21 | 0 | ||
| 2005 | 11 | 0 | 0 | 0 | 2 | 0 | 13 | 0 | |||
| 2006 | Vegalta Sendai | J2 League | 9 | 0 | 1 | 0 | colspan="2" | - | 10 | 0 | |
| 2007 | 3 | 0 | 0 | 0 | colspan="2" | - | 3 | 0 | |||
| 2008 | AC Nagano Parceiro | Regional Leagues | 14 | 1 | colspan="2" | - | colspan="2" | - | 14 | 1 | |
| Thailand | League | Queen's Cup | League Cup | Total | |||||||
| 2009 | Chonburi | Premier League | 12 | 1 | 0 | 0 | colspan="2" | - | 12 | 1 | |
| 2010 | Thai Port | Premier League | 7 | 0 | 0 | 0 | colspan="2" | - | 7 | 0 | |
| 2011 | |||||||||||
| Country | Japan | 192 | 2 | 10 | 0 | 11 | 1 | 213 | 3 | ||
| Thailand | 19 | 1 | 0 | 0 | colspan="2" | - | 19 | 1 | |||
| Total | 211 | 3 | 10 | 0 | 11 | 1 | 232 | 4 | |||
Clubs