Carl Hilding "Doc" Severinsen (born July 7, 1927) is an American pop and jazz trumpeter. He is best known for leading the NBC Orchestra on The Tonight Show Starring Johnny Carson.

Severinsen was born in Arlington, Oregon, the son of Minnie Mae and Carl Severinsen, who was a dentist. He was nicknamed "Little Doc" after his father, and had originally wanted to play the trombone. But the senior Severinsen, a gifted amateur violinist, urged him to study the violin. The younger Severinsen insisted on the trombone, but had to settle for the only horn available in Arlington's small music store — a trumpet. A week later, with the help of his father and a manual of instructions, the seven-year-old was so good that he was invited to join the high school band.

At the age of twelve, Little Doc won the Music Educator's National Contest and, while still in high school, was hired to go on the road with the Ted Fio Rito Orchestra. However, his stay with the group was cut short by the draft. He served in the Army during World War II. He made his broadcasting debut playing live popular music on radio station KODL in The Dalles, Oregon.