Kosuke Tomonaga

{{short description|Japanese volleyball player (born 1980)}}

{{Use dmy dates|date=February 2019}}

{{Infobox sportsperson

| name = Kosuke Tomonaga

| full_name =

| image =

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| nationality = Japanese

| sport = Volleyball

| birth_date = {{birth date and age|1980|7|22|df=yes}}

| birth_place = Omura, Japan

| death_date =

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}}

Kosuke Tomonaga (born 22 July 1980) is a Japanese volleyball player. He competed in the men's tournament at the 2008 Summer Olympics.{{cite Sports-Reference |url=https://www.sports-reference.com/olympics/athletes/to/kosuke-tomonaga-1.html |archive-url=https://web.archive.org/web/20200417185858/https://www.sports-reference.com/olympics/athletes/to/kosuke-tomonaga-1.html |url-status=dead |archive-date=17 April 2020 |title=Kosuke Tomonaga Olympic Results |accessdate=13 February 2019}}