Lawrence Hugh Aller (1913 – March 16 2003) was an American astronomer.

He was born in Tacoma, Washington. He never finished high school and worked for a time as a gold miner. He obtained his Ph.D. in astronomy from Harvard in 1943. He worked at UCLA and helped build its Astronomy department.

His work concentrated on the chemical composition of stars and nebulas, including elemental abundances.

He won the Henry Norris Russell Lectureship in 1992.