John Sem

{{short description|Papua New Guinean boxer}}

{{Infobox sportsperson

| name = John Sem

| image =

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| nationality = Papua New Guinean

| sport = Boxing

| event =

| birth_date = {{Birth date and age|1973|07|19|df=yes}}

| birth_place = Papua New Guinea

| height = 140 cm

| weight = 51 kg

| country = {{flag|Papua New Guinea}}

| pb =

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}}

John Sem is a Papua New Guinean Olympic boxer. He represented his country in the bantamweight division at the 1992 Summer Olympics. He lost his first bout against Serafim Todorov of Bulgaria.{{cite web|url=https://www.sports-reference.com/olympics/athletes/se/john-sem-1.html|archive-url=https://web.archive.org/web/20200418105250/https://www.sports-reference.com/olympics/athletes/se/john-sem-1.html|url-status=dead|archive-date=2020-04-18|title=John Sem Bio, Stats, and Results|website=Olympics at Sports-Reference.com}}