He was born in La Salle, Illinois on June 29, 1886. Lachman was educated at the University of Michigan before becoming a magazine and book illustrator, contributing 4 colour illustrations to the 1907 work John Smith, Gentleman Adventurer by Charles Harcourt Ainslie Forbes-Lindsay. In 1911, he emigrated to Paris where he earned a substantial reputation as a post impressionist painter and was awarded the Légion d'Honneur by the French government.
Lachman's interest in motion pictures stemmed from his position as a set designer in Nice, leading to work on Mare Nostrum in 1925. He worked as a director in France and England before settling in Hollywood in 1933. His credits include Down Our Street, Baby Take a Bow, Dante's Inferno, Our Relations, and Dr. Renault's Secret.
- Weekend Wives (1928)
- Under the Greenwood Tree (1929)
- Song of Soho (1930)
- The Yellow Mask (1930)
- The Outsider (1931)
- Insult (1932)
- Down Our Street (1932)
- Aren't We All? (1932)
- Paddy the Next Best Thing (1933)
- Face in the Sky (1933)
- Baby Take a Bow (1934)
- Dante's Inferno (1935)
- Our Relations (1936)
- Charlie Chan at the Circus (1936)
- They Came by Night (1940)
- Murder Over New York (1940)
- Dr. Renault's Secret (1942)
- "Harry Lachman, A Film Director. Former Painter Dead at 88 Decorated by French". New York Times. March 21, 1975. Retrieved 2013-12-30.
Harry Lachman, a painter and film director, died yesterday of a heart attack at his home in Beverly Hills. He was 88 years old.
- C.H. Forbes-Lindsay, John Smith: Gentleman Adventurer J.B. Lippincott Company, 1907.