Using the term "ambient" broadly and not narrowing it down to various sub-genres, here are some of my favorite ambient artists (in alphabetical order):
Antonymes
A Winged Victory For The Sullen
Olafur Arnalds
Bersarin Quartett
Black Swan
Will Bolton
Michael Brook
Harold Budd
bvdub
Celer
Dakota Suite
Brian Eno
Emanuele Errante
Ex Confusion
Nils Frahm
Robin Guthrie
Robert Haigh
Greg Haines
Chihei Hatakeyama
Johann Johannsson
Marsen Jules
Keith Kenniff
Leyland Kirby
Saito Koji
Clem Leek
Loscil
Marconi Union
Brian McBride
Alva Noto
Dustin O'Halloran
Olan Mill
Yui Onodera
Fabio Orsi
M. Ostermeier
Pjusk
Ramses II
Stars Of The Lid
Strom Noir
Nicholas Szczepanik
Ryan Teague
The Dead Texan
Fluid Radio - Channel 1 has a nice streaming selection of music in the Ambient/Electroacoustic/Experimental/Drone genres. Check it out.
Antonymes
A Winged Victory For The Sullen
Olafur Arnalds
Bersarin Quartett
Black Swan
Will Bolton
Michael Brook
Harold Budd
bvdub
Celer
Dakota Suite
Brian Eno
Emanuele Errante
Ex Confusion
Nils Frahm
Robin Guthrie
Robert Haigh
Greg Haines
Chihei Hatakeyama
Johann Johannsson
Marsen Jules
Keith Kenniff
Leyland Kirby
Saito Koji
Clem Leek
Loscil
Marconi Union
Brian McBride
Alva Noto
Dustin O'Halloran
Olan Mill
Yui Onodera
Fabio Orsi
M. Ostermeier
Pjusk
Ramses II
Stars Of The Lid
Strom Noir
Nicholas Szczepanik
Ryan Teague
The Dead Texan
Fluid Radio - Channel 1 has a nice streaming selection of music in the Ambient/Electroacoustic/Experimental/Drone genres. Check it out.