| Kotaro Yamazaki 山崎 光太郎 | |
| Fullname: | Kotaro Yamazaki |
| Birth Date: | 19 October 1978 |
| Birth Place: | Shizuoka, Shizuoka, Japan |
| Position: | Forward |
| Youthyears1: | 1994–1996 |
| Youthclubs1: | Shimizu Higashi High School |
| Youthyears2: | 1999–2000 |
| Youthclubs2: | Chukyo University |
| Years1: | 1997–1998 |
| Clubs1: | Nagoya Grampus Eight |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2001–2002 |
| Clubs2: | Shimizu S-Pulse |
| Caps2: | 9 |
| Goals2: | 0 |
| Years3: | 2003–2007 |
| Clubs3: | Ventforet Kofu |
| Caps3: | 73 |
| Goals3: | 10 |
| Totalcaps: | 82 |
| Totalgoals: | 10 |
| Nationalyears1: | 1995 |
| Nationalteam1: | Japan U-17 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 1 |
is a former Japanese football player.
Yamazaki was born in Shizuoka on October 19, 1978. After graduating from Shimizu Higashi High School, he joined Nagoya Grampus Eight in 1997. He also entered in Chukyo University. However he had no opportunity to play at Grampus. He left Grampus and joined Chukyo University team in 1999. After graduating from the university, he joined his local club Shimizu S-Pulse in 2001. He moved to J2 League club Ventforet Kofu in 2003. The club was promoted to J1 League in 2006. He retired end of 2007 season.
In August 1995, Yamazaki was selected Japan U-17 national team for 1995 U-17 World Championship. He played all 3 matches and scored a goal against United States.
| 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 | Nagoya Grampus Eight | J1 League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 1998 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| 2001 | Shimizu S-Pulse | J1 League | 9 | 0 | 1 | 0 | 1 | 0 | 11 | 0 | |
| 2002 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0 | |||
| 2003 | Ventforet Kofu | J2 League | 13 | 2 | 2 | 1 | colspan="2" | - | 15 | 3 | |
| 2004 | 18 | 5 | 1 | 0 | colspan="2" | - | 19 | 5 | |||
| 2005 | 10 | 1 | 0 | 0 | colspan="2" | - | 10 | 1 | |||
| 2006 | J1 League | 18 | 2 | 1 | 0 | 4 | 3 | 23 | 5 | ||
| 2007 | 14 | 0 | 0 | 0 | 2 | 0 | 16 | 0 | |||
| Career total | 82 | 10 | 5 | 1 | 9 | 3 | 80 | 14 | |||