Thomas Lawrason Riggs (1888–1943) was an American Catholic priest and musical theatre lyricist. Riggs was the first Catholic chaplain of Yale University.
The grandson of banker George Washington Riggs, Riggs was from a wealthy upper class Episcopalian family. In his youth Riggs was an acquaintance of the artist L. Bancel LaFarge, and came to know Thornton Wilder, Monty Woolley and other notable creative people while at Yale. Riggs was the president of the Yale Dramatic Society and a member of the Scroll and Key collegiate society.
Graduating from Yale as a member of the class of 1910, Riggs embarked on graduate studies at Harvard University as an assistant to Barrett Wendell, which were interrupted by his foray into musical theatre. Riggs never completed his doctorate.
Riggs was Cole Porter's roommate at Yale, and with Porter wrote See America First, a patriotic comic opera that spoofed the "flag waving" musicals of George M. Cohan.See America First received a poor critical reception when it opened on Broadway in March 1916 following previews in New Haven, Connecticut and Rochester, New York. Riggs had invested $35,000 in the production and never worked on another musical.
Riggs joined the Yale Mobile Hospital unit at the United States entry into World War I in 1917, and later served as a specialist in foreign languages to military intelligence in Paris.
Following the war Riggs decided to become a Catholic priest, a vocation he had been considering since 1910. He graduated from The Catholic University of America and the St. Thomas Seminary in Connecticut., following which he was appointed the first Catholic Chaplain at Yale. The Catholic Bishop of Hartford, John Joseph Nilan, forbade Riggs to celebrate Sunday Mass on campus, in deference to local priests, who opposed the creation of a religious centre outside parish structures. Following Nilan's death in 1934, the ban was lifted in 1936 by his successor as bishop, Maurice F. McAuliffe.