Elwood Lindsay Haines (March 12, 1893 – October 28, 1949) was a 20th-century bishop in the Protestant Episcopal Church in the United States of America.

He was Dean of Christ Church Cathedral in Louisville, Kentucky when he was elected on March 8, 1944, as the fifth bishop of Iowa.

When he began his duties as bishop the country was engulfed in World War II and visitation in the diocese was difficult because the lack of car sales, gasoline and tire rationing, and railroad routes.

The diocesan headquarters and the bishop’s residence moved from Davenport to Des Moines so that it was more centrally located in the diocese.

A diocesan historiographer replaced the former registrar, with Dean Rowland Philbrook of Trinity Cathedral filling the position.

He and his wife visited Alaska for two months in 1946 to conduct a survey on church life in the territory and make recommendations for any changes.