Alfred Mark Lansing (July 21, 1921 – August 27, 1975) was an American journalist and writer, renowned for his gripping narrative in Endurance: Shackleton's Incredible Voyage (1959), a compelling account of Sir Ernest Shackleton's Antarctic expeditions. A storyteller of great talent, Lansing captured the essence of human perseverance and the unforgiving nature of the Antarctic.

Before embarking on his writing career, Lansing served in the US Navy from 1940-46, where he was honored with the Purple Heart for his wartime service. His educational journey took him through North Park College (1946-48) and Northwestern University (1948-50), laying the groundwork for his future endeavors. His commitment to exploring human endurance in extreme conditions led him to become a member of the Scott Polar Research Institute, Cambridge, England, in 1957. Lansing's work for prominent publications such as Collier's and as an editor for Time, Inc. Books further cemented his reputation as a meticulous and passionate journalist.