Waldemar Young (July 1, 1878 – August 30, 1938) was an American screenwriter. He wrote for more than 80 films between 1917 and 1938.

He was born in Salt Lake City, Utah and died in Hollywood, California from pneumonia.^[1] Waldemar was a grandson of Brigham Young.^[2] He was also a brother of Mahonri Young.

Young joined the staff of the Salt Lake Herald after he graduated from high school. He then went to Stanford University starting in 1900. At Stanford, he played on the football team. He majored in English but also studied economics and history. Young did not finish his studies at Stanford. Instead, he took jobs with the San Francisco Chronicle and the San Francisco Examiner.

In 1912, Young married Elizabeth Haight,^[1] who was a great-niece of the early California Mormon leader Sam Brannan. Young started into films by writing comedy routines for Franklyn Farnum and Brownie Vernon.

In the 1920s, he often worked on films with Lon Chaney, Tod Browning, and their editor Errol Taggart.

In the 1930s, Young wrote several screenplays for Cecil B. DeMille.