Felix Lossing Cirlot (August 3, 1901 — March 30, 1956) was a notable American Anglo-Catholic writer in the Episcopal Church during the twentieth century. Cirlot published a wide variety of publications on controversial topics, including Episcopal-Presbyterian ecumenical proposals and the apostolic succession. He was born in Mobile, Alabama and graduated from Spring Hill College and the General Theological Seminary before ordination to the priesthood in 1928.
Cirlot was chaplain to the Community of St. John Baptist in Mendham, New Jersey, and chaplain to the Order of St. Helena in Versailles, Kentucky. He was also professor of New Testament and Apologetics at Nashotah House Theological Seminary from 1930 to 1933. He served as an assisting priest at Church of St. Mary the Virgin (Manhattan) and St. Paul's Church, Brooklyn, and as rector of St. Andrew's Church, Buffalo from 1936 to 1941. He was also curate at St. Clement's, New York from 1941 to 1944 and from 1946 to 1953.
Cirlot died of a heart attack in El Paso, Texas.