1951 National Challenge Cup

{{Use mdy dates|date=August 2023}}

{{Infobox football tournament season

| title = National Challenge Cup

| year = 1951

| other_titles =

| image = Dewar trophy 1914.jpg

| image_size =

| caption = Dewar Challenge Cup

| country = United States

| dates = March 11 – June 17, 1951

| venue =

| num_teams =

| defending_champions = St. Louis Simpkins–Ford

| winners = New York German–Hungarian S.C.

| count = 1

| second = Heidelberg S.C.

| semifinal1 = Sparta

| semifinal2 = Philadelphia Nationals

| continental_cup_title =

| continental_cup_qualifiers =

| continental_cup_title1 =

| continental_cup_qualifiers1 =

| matches =

| goals =

| attendance =

| scoring_leader =

| player_label =

| award =

| prev_season = 1950

| next_season = 1952

| updated =

| extra_information =

}}

The 1951 National Challenge Cup was the 38th edition of the USSFA's annual open soccer championship. The German Hungarian S.C. from Eastern New York defeated the Pittsburgh Heidelberg in a two-leg final to win.{{cite news|url=https://www.newspapers.com/article/the-brooklyn-daily-eagle/149014605/|title=Local Booters Snare National Challenge Cup|first=Bill|last=Graham|work=Brooklyn Eagle|date=June 18, 1951|access-date=June 9, 2024|page=14|via=Newspapers.com}} The Heidelberg manager later filed a protest with the United States Soccer Football Association, specifically regarding the "inefficient and partial" officials.{{cite news|url=https://www.newspapers.com/article/pittsburgh-sun-telegraph/149014950/|title=Heidelberg Protests|first=Andrew|last=Dugo|work=Pittsburgh Sun-Telegraph|date=June 20, 1951|access-date=June 9, 2024|page=22|via=Newspapers.com}}