Martin Wiggo Johnson (September 30, 1893 – November 28, 1984), was an American oceanographer.
Of Scandinavian ancestry, Johnson was born in a farm house on the Great Plains in Chandler, South Dakota. As a young man, he was a general ranch hand. His family moved to Washington State, where he worked as a logger and as a guard on salmon traps.
After army service during World War I, Johnson attended the University of Washington and graduated in 1923. He was later awarded a PhD by his university.
Johnson died on November 28, 1984, in Snohomish, Washington.
An online edition of The Oceans: Their Physics, Chemistry and General Biology is now available here.