John Allyn

{{short description|American baseball executive}}

{{Infobox sportsperson

| honorific_prefix =

| name =

| honorific_suffix =

| image =

| image_size =

| image_upright =

| landscape =

| alt =

| caption =

| headercolor =

| textcolor =

| native_name =

| native_name_lang =

| birth_name =

| full_name =

| nickname =

| nationality =

| national_team =

| citizenship =

| birth_date =May 17, 1917

| birth_place =Chicago, Illinois

| death_date =April 29, 1979

| death_place =Winnetka, Illinois

| resting_place =

| resting_place_coordinates =

| monuments =

| hometown =

| education =

| alma_mater =

| occupation = Co-owner, Chicago White Sox

| years_active =

| employer =

| agent =

| height =

| weight =

| spouse =

| life_partner =

| children =

| parents =

| relatives = Arthur Allyn, Jr. (Brother)

| other_interests =

| website =

| module =

| country =

| sport = Baseball

| position =

| shoots =

| catches =

| disability =

| disability_class =

| weight_class =

| weight_class_type =

| rank =

| event =

| event_type =

| universityteam =

| collegeteam =

| league = Major League Baseball

| league_type =

| club = Chicago White Sox

| team =

| turnedpro =

| turnedpro_type =

| partner =

| former_partner =

| coach =

| retired =

| coaching =

| module2 =

| worlds =

| regionals =

| nationals =

| olympics =

| paralympics =

| commonwealth =

| highestranking =

| pb =

| show-medals =

| medaltemplates =

| medaltemplates-title =

| module3 =

}}

John Allyn (May 17, 1917 – April 29, 1979) was the co-owner of the Chicago White Sox of the American League with his brother Arthur Allyn, Jr. from {{by|1961}} through {{by|1969}}, and sole principal owner from {{by|1969}} through {{by|1975}}. In addition, John Allyn served as president of the Chicago Mustangs soccer team which he co-owned with his brother, Arthur. In 1975, Allyn sold the club back to the person he and his brother had purchased it from in 1961, Bill Veeck.