Mark Oliver Everett (born April 10, 1963 in Los Feliz, California) is the American lead singer, songwriter, guitarist, keyboardist and sometime drummer of the independent rock band Eels.

Also known as “E”, he is known for writing songs tackling subjects such as death, loneliness, divorce, childhood innocence, depression, and unrequited love.

Mark Oliver Everett is the son of physicist Hugh Everett III, originator of the many-worlds interpretation of quantum theory and of the use of Lagrange multipliers for general engineering optimizations. Everett’s maternal grandfather was Harold “Kid” Gore, a legendary men’s basketball, football and baseball coach at the University of Massachusetts-Amherst.

In 2008 he published his autobiography Things the Grandchildren Should Know.