Phineas McCray Casady (December 3, 1818 – September 2, 1908) was an American pioneer, judge, lawyer, and state senator in Iowa.

He first traveled to Des Moines, then on to Indigenous Dakota land on the Western frontier.

His brother Jefferson P. Casady also served as a judge, lawyer, and state senator.

He is interred in the Casady family mausoleum at Woodland Cemetery in Des Moines, Iowa.

In their proceedings, the Society praised Casady as "one of the pioneers of Iowa, going there in the days of the Indian and the buffalo" and who found "little difficulty inspiring others with his racial pride and enthusiasm.