Masayuki Onishi

{{short description|Japanese footballer}}

{{Infobox football biography

|name=Masayuki Onishi
大西 昌之

|image=

|image_size=

|caption=

|fullname=Masayuki Onishi

|birth_date={{Birth date and age|1977|7|5}}

|birth_place=Hokkaido, Japan

|death_date=

|death_place=

|height={{Height|m=1.74}}

|position=Forward

|currentclub=

|clubnumber=

|youthyears1=1993–1995|youthclubs1=Muroran Otani High School

|youthyears2=1996–1999|youthclubs2=Aichi Gakuin University

|years1=2000|clubs1=Yokohama F. Marinos|caps1=0|goals1=0

|years2=2001|clubs2=Albirex Niigata|caps2=13|goals2=0

|totalcaps=13|totalgoals=0

|nationalyears1=|nationalteam1=|nationalcaps1=|nationalgoals1=

|manageryears1=|managerclubs1=

|medaltemplates=

{{Medal|Team|Yokohama F. Marinos}}

{{Medal|RU|J1 League|2000}}

}}

{{Nihongo|Masayuki Onishi|大西 昌之|Ōnishi Masayuki|born July 5, 1977}} is a former Japanese football player.