Timothy "Timoteo" Irwin Means Heinemann (March 18, 1944 – August 13, 2019) was an American-Mexican ecotourism and environmentalist. He was born in Beaver Falls, Pennsylvania. He was known for his works for the protection and preservation of the Baja California peninsula and its wildlife. He played an important role in the Federal government of Mexico's designation of Isla Espíritu Santo as an area of ecological and national protected area in 1994. His works were acknowledged by the UNESCO. 