The 2016 Guam Republican caucus took place on March 12 in the U.S. territory of Guam as one of the Republican Party's primaries ahead of the 2016 presidential election. On the same day, the Republican Party held their Washington, D.C. caucus, while the Democratic Party held a caucus in the Northern Mariana Islands. The Democratic Party's own Guam caucus was held on May 7, 2016.