:Jack McMahon (baseball)

{{Short description|American baseball player (1869–1894)}}

{{Use mdy dates|date=July 2024}}

{{Infobox baseball biography

|name=Jack McMahon

|position=First baseman/Catcher

|image=

|bats=Right

|throws=Left

|birth_date=October 15, 1869

|birth_place=Waterbury, Connecticut

|death_date={{death date and age|1894|12|30|1869|10|15}}

|death_place=Bridgeport, Connecticut

|debutleague = MLB

|debutdate=August 8

|debutyear=1892

|debutteam=New York Giants

|finalleague = MLB

|finaldate=June 19

|finalyear=1893

|finalteam=New York Giants

|statleague = MLB

|stat1label=Games played

|stat1value=51

|stat2label=At bats

|stat2value=177

|stat3label=Hits

|stat3value=43

|teams=

• New York Giants (1892–1893)

}}

John Henry McMahon (October 15, 1869 – December 30, 1894) was a Major League Baseball first baseman and catcher. He played in 51 games, with a .243 batting average, for the New York Giants of the National League in 1892 and 1893.