| Kenji Oba 大場 健史 | |
| Fullname: | Kenji Oba |
| Birth Date: | 14 August 1967 |
| Birth Place: | Kanagawa, Japan |
| Position: | Defender |
| Youthyears1: | 1983–1985 |
| Youthclubs1: | Asahi High School |
| Years1: | 1986–1991 |
| Clubs1: | Nissan Motors |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 1991–1994 |
| Clubs2: | Kashima Antlers |
| Caps2: | 50 |
| Goals2: | 2 |
| Years3: | 1995–1996 |
| Clubs3: | Kashiwa Reysol |
| Caps3: | 28 |
| Goals3: | 1 |
| Years4: | 1997–1998 |
| Clubs4: | Kawasaki Frontale |
| Caps4: | 28 |
| Goals4: | 0 |
| Totalcaps: | 106 |
| Totalgoals: | 3 |
is a former Japanese football player. He used his name "大場 賢治" until April 1994.
Oba was born in Kanagawa Prefecture on August 14, 1967. After graduating from high school, he joined Japan Soccer League club Nissan Motors in 1986. However he could not play at all in the game. He moved to Sumitomo Metal (later Kashima Antlers) in 1991. He played many matches. In 1992, Japan Soccer League was folded and founded new league J1 League. The club won the 2nd place 1993 J1 League and 1993 Emperor's Cup. He moved to newly promoted to J1 League club, Kashiwa Reysol in 1995. Although he played many matches in 1995, his opportunity to play decreased in 1996. In 1997, he moved to Japan Football League club Kawasaki Frontale. He lost opportunity to play in 1998 and retired end of 1998 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 | |||||||
| 1986/87 | Nissan Motors | JSL Division 1 | 0 | 0 | 0 | 0 | |||||
| 1987/88 | 0 | 0 | 0 | 0 | |||||||
| 1988/89 | 0 | 0 | 0 | 0 | |||||||
| 1989/90 | 0 | 0 | 0 | 0 | 0 | 0 | |||||
| 1990/91 | 0 | 0 | 0 | 0 | 0 | 0 | |||||
| 1991/92 | Sumitomo Metal | JSL Division 2 | 28 | 2 | 2 | 0 | 30 | 2 | |||
| 1992 | Kashima Antlers | J1 League | colspan="2" | - | 3 | 0 | 10 | 1 | 13 | 1 | |
| 1993 | 9 | 0 | 5 | 0 | 1 | 0 | 15 | 0 | |||
| 1994 | 13 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | |||
| 1995 | Kashiwa Reysol | J1 League | 24 | 1 | 0 | 0 | colspan="2" | - | 24 | 1 | |
| 1996 | 4 | 0 | 0 | 0 | 11 | 0 | 15 | 0 | |||
| 1997 | Kawasaki Frontale | Football League | 27 | 0 | 3 | 0 | colspan="2" | - | 30 | 0 | |
| 1998 | 1 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | |||
| Total | 106 | 3 | 11 | 0 | 25 | 1 | 142 | 4 | |||