| Yasunari Hiraoka 平岡 靖成 | |
| Fullname: | Yasunari Hiraoka |
| Birth Date: | 13 March 1972 |
| Birth Place: | Yaita, Tochigi, Japan |
| Position: | Defender |
| Youthyears1: | 1987–1989 |
| Youthclubs1: | Yaita Higashi High School |
| Youthyears2: | 1990–1993 |
| Youthclubs2: | Juntendo University |
| Years1: | 1994–1996 |
| Clubs1: | Otsuka Pharmaceutical |
| Caps1: | 48 |
| Goals1: | 1 |
| Years2: | 1997–1998 |
| Clubs2: | Kyoto Purple Sanga |
| Caps2: | 28 |
| Goals2: | 0 |
| Years3: | 1999–2000 |
| Clubs3: | Oita Trinita |
| Caps3: | 45 |
| Goals3: | 1 |
| Years4: | 2000–2003 |
| Clubs4: | Nagoya Grampus Eight |
| Caps4: | 41 |
| Goals4: | 2 |
| Years5: | 2004–2007 |
| Clubs5: | Omiya Ardija |
| Caps5: | 23 |
| Goals5: | 0 |
| Totalcaps: | 185 |
| Totalgoals: | 4 |
is a former Japanese football player.
Hiraoka was born in Yaita on March 13, 1972. After graduating from Juntendo University, he joined Japan Football League club Otsuka Pharmaceutical in 1994. He played many matches as center back. In 1997, he moved to Kyoto Purple Sanga. Although he played many matches in 1997, he could hardly play in the match in 1998. In 1999, he moved to newly was promoted to J2 League club, Oita Trinita. He played many matches as regular player. In September 2000, he moved to Nagoya Grampus Eight. He played many matches as regular player until early 2001. However his opportunity to play decreased from late 2001 season. In 2004, he moved to J2 club Omiya Ardija. Although he could hardly play in the match in 2004, the club was promoted to J1. He played many matches in 2005. However he could hardly play in the match from 2006 and retired end of 2007 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 | |||||||
| 1994 | Otsuka Pharmaceutical | Football League | 9 | 0 | 0 | 0 | colspan=2 | - | 9 | 0 | |
| 1995 | 15 | 0 | 1 | 0 | colspan=2 | - | 16 | 0 | |||
| 1996 | 24 | 1 | 4 | 0 | colspan=2 | - | 28 | 1 | |||
| 1997 | Kyoto Purple Sanga | J1 League | 26 | 0 | 1 | 0 | 1 | 0 | 28 | 0 | |
| 1998 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | |||
| 1999 | Oita Trinita | J2 League | 26 | 0 | 3 | 1 | 1 | 1 | 30 | 2 | |
| 2000 | 19 | 1 | 0 | 0 | 1 | 0 | 20 | 1 | |||
| 2000 | Nagoya Grampus Eight | J1 League | 12 | 1 | 2 | 1 | 5 | 1 | 19 | 3 | |
| 2001 | 21 | 1 | 0 | 0 | 4 | 1 | 25 | 2 | |||
| 2002 | 8 | 0 | 0 | 0 | 2 | 0 | 10 | 0 | |||
| 2003 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| 2004 | Omiya Ardija | J2 League | 4 | 0 | 2 | 0 | colspan=2 | - | 6 | 0 | |
| 2005 | J1 League | 16 | 0 | 0 | 0 | 4 | 0 | 20 | 0 | ||
| 2006 | 3 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | |||
| 2007 | 0 | 0 | 0 | 0 | 2 | 0 | 2 | 0 | |||
| Career total | 185 | 4 | 13 | 2 | 19 | 3 | 219 | 9 | |||