The First Samoan Civil War refers to the conflict between rival Samoan factions in the Samoan Islands of the South Pacific.

The war is fought roughly between 1886 and 1894, primarily between Samoans though the German military intervene on several occasions.

The United States and the United Kingdom oppose the German activity, which leads to a confrontation in Apia Harbor in 1887.

Hostilities break out again in 1898 but are quickly ended by a British and American intervention and the partitioning of the island chain at the Tripartite Convention of 1899.