Sir James Laurence Cotter, 5th Baronet of Rockforest (1887–1924) was an Anglo-Irish officer, High Sheriff of County Cork, and Baronet.
Cotter was the first son of James Lombard Cotter (the second son of the fourth Baronet) and grandson of the third Baronet.
He succeeded his grandfather, the fourth Baronet, in 1902. He was a captain in the Royal Artillery and a Brig-Major in the South of Ireland Imperial Yeomanry and in 1914 was appointed to the office of High Sheriff of County Cork.
He married, firstly, Ethel Lucy Wheeler the daughter of Alfred Wheeler, and had issue Violet Rosa Sonia Cotter, Sir Delaval Cotter, and Laurence Stopford Llewellyn Cotter who was killed in action in Sicily in 1943 at age 30. And secondly, Griselda Winifred Wenyon, daughter of Edwin James Wenyon.
Upon his death, Cotter was succeeded by his first son Sir Delaval Cotter, the 6th Baronet