Otto Schoenrich (July 9, 1876 – February 9, 1977) was an American lawyer who held several international legal positions and practiced at the firm Curtis, Mallet‐Prevost, and Colt & Mosley.
He was the eldest son of Lena A. née Sieck (1853–1940) and German-born language teacher Carl Otto Schoenrich (1847–1932).
In 1904, he was appointed Municipal Judge in the port city of Mayagüez and served as a representative of the United States Commissioner to investigate the financial condition of Santo Domingo.
In 1906, he served as Secretary of the Minister of Finance of the Dominican Republic and joined the government of American-occupied Cuba.
After working for one year as a district judge in Humacao, Puerto Rico, he moved to New York City in 1916, where he joined the law firm Curtis, Mallet-Prevost, Colt & Mosle as a partner.