1st Marine Brigade may refer to: * 1st Marine Brigade, Takavar unit of Islamic Republic of Iran Navy * 1st Provisional Marine Brigade, a United States Marine Corps ad hoc infantry brigade (with lineage including service from 10 June 1912 until 13 September 1950); active in Cuba (1912), Iceland (1941-1942), Guam (1944), Post WWII Guam (1947), and Korea (1950). * 1st Marine Brigade (United States), the forebearer of the 1st Marine Division, formerly known as the 1st Advance Base Brigade, and the 1st Brigade, Advanced Base Force (with lineage extending from 23 December 1913 until 1 February 1941), with service as a separate brigade in Puerto Rico (1914), Mexico (1914), Haiti (1915-1934), Dominican Republic (1916), and Cuba (1940). * 1st Marine Expeditionary Brigade (United States), a perm