Billiards Magazine RIP. Best pool mag ever printed
Well, it RIPed about 1934 so some of the youngsters may not have seen it.
I'll mention Billard, the wonderful magazine published in Vienna by Heinrich Weingartner. I think it is no longer published.
That brings us to (*=no longer published):
Billiards Digest (1978 to present)
Inside Pool (*?)
National Billiard News* (Earl Newby, Ray Abrams, Conrad Burkman)
Pool & Billiard
On The Snap*
American Cueist*
Billiards Magazine* (US to ~1934)
Billard* (Weingartner, 1966 to ?)