ICML and ~ICRL~ ICLR are pretty good too.
Disclaimer: I am one of the organizers.
Check their website, next conf is in London
List of Conferences on CV (in no particular order)
WWW will be in Lyon, this is also a tier 1 conference with a similar goal, mostly involved on web problems, eg search ranking.
I've always felt that ECML was the top Europe specific ML conference. Basically the little brother to ICML. ECML will be in Ireland, ICML will be in Sweden.
Disclaimer: I'm the organizer, but don't take my word for it, watch the videos from last year: https://www.dotconferences.com/conference/dotai
IJCAI and AAAI are the mainstream long-running AI meetings.
NIPS and ICML are the recently-ascendent NN-heavy meetings.
Robotics: Science and Systems (RSS) is smaller but its paper acceptance is much more selective and it is becoming a very prestigious conference. It's also single-track, which makes it nice as an attendee (ICRA and IROS run probably eight to ten parallel tracks).
The A class conferences in AI field are: AAAI, CVPR, ICCV, ICML, IJCAI, NIPS, ACL.