Gustaf Wejnarth

{{short description|Swedish sprinter}}

{{Use dmy dates|date=February 2016}}

{{Infobox sportsperson

| name =

| nickname =

| image = Gustaf Wejnarth SOK.jpg

| image_size =

| caption =

| birth_date = 24 April 1902

| birth_place = Eskilstuna, Sweden

| death_date = 22 April 1990 (aged 87)

| death_place = Örebro, Sweden

| height =

| weight =

| sport = Athletics

| event = Sprint

| club = SoIK Hellas

| pb = 100 m – 11.0 (1922)
400 m – 49.8 (1921)

| alma_mater =

| show-medals = yes

| medaltemplates =

{{MedalCountry|{{SWE}}}}

{{MedalCompetition|Olympic Games}}

{{MedalSilver | 1924 Paris | 4×400 m relay}}

}}

Carl Gustaf Olof Wejnarth (24 April 1902 – 22 April 1990) was a Swedish sprinter who competed in the 1924 Summer Olympics.{{cite web|url=https://www.olympedia.org/athletes/76442 |title=Gustaf Wejnarth |work=Olympedia |access-date=16 September 2021}} He won a silver medal in the {{nowrap|4 × 400 m}} relay and failed to reach the final of the individual 400 m event.