Frank Adair Monroe (August 30, 1844 – January 16, 1927) was a justice of the Louisiana Supreme Court from March 22, 1899, to January 2, 1922, serving as chief justice from April 5, 1914, on.

[1][2] Born in Annapolis, Maryland,[3] Monroe's grandfather was Thomas Bell Monroe, a judge of the United States District Court for the District of Kentucky.

[1] He served in the Confederate Army during the war,[3] where he was wounded in 1863, and was captured and held by Union forces for eight months.

[1] He served for one month as Judge of Third District Court in 1872, when he was dispossessed.

He succeeded Judge Breaux as Chief Justice through seniority in April 1914.