The 2024 New Hampshire Republican presidential primary was held on January 23, 2024, as part of the Republican Party primaries for the 2024 presidential election.

Presidential primaries and caucuses are being held to select delegates to the 2024 Republican National Convention to determine the party's nominee for president in the 2024 United States presidential election. The Republican primaries and caucuses have taken place or will take place in all 50 U.S. states, the District of Columbia, and five U.S. territories between January and June 2024. The 2024 Republican National Convention is scheduled to be held in July at the Fiserv Forum in Milwaukee, Wisconsin.