Comedy club · Ontario, California

Ontario Improv, CA: Shows, Open Mic and Booking

4555 Mills Circle, Ontario, CA 91764

The short answer

Ontario Improv is a comedy club in Ontario, California, at 4555 Mills Circle. Shows run Wednesday to Sunday, some Tuesdays; tickets $25.22–$37.17, 21 and over, two-item minimum. For comics, it runs an open mic (second Tuesday of the month, 8:00 PM) and publishes how to get booked.

On stage soon

Lineups belong to the club and the comedians, and can change; the listing has the last word. More shows in California on the Comedy Calendar →

For comics

Open micSecond Tuesday of the month, 8:00 PM — Open Mic at the Ontario Improv source ↗
Getting bookedEmail a 5–10 minute clip to submissions@levitylive.com source ↗
ShowsWednesday to Sunday, some Tuesdays source ↗
RoomSeats up to 350 source ↗

Per the club's own site, read 23 September 2026.

What the room asks of comics
The tape it wants

From the club's own pages, read 25 September 2026 — hover a rule for its exact words, or open its source. Where two of its pages disagree, both are here.

More stage time: Stage Time has open mics by night, and the Gig Board has calls for comics posted by the rooms themselves.

For fans

TicketsStarting prices $25.22–$37.17 on the shows it listed ("Starts at" on each show page) source ↗
Age21 and over unless the show says otherwise source ↗
MinimumTwo-item minimum; any food or drink counts, with or without alcohol source ↗
PhonesNo photos or recording without consent; some artists keep phones out of the show — check your show source ↗
ParkingNorth lot next to AMC Theaters and Market Broiler; valet on Fridays and Saturdays only source ↗

As the club's own pages give them, read 30 September 2026 — tap or hover a source for its exact words.

Club Etiquette: how to be the table the room loves →

Plan the night

The night planner builds an evening around Ontario Improv: where to eat before, the trip there and home, and what the night costs.

Plan a night here → The club's site ↗

Seen running on its own site, 23 September 2026.

Near Ontario Improv

Comedy clubs in California → · The Club Directory, coast to coast →

The Club Directory is also in the back of the D.O.C. book, Stand-Up Comedy: From Writing to Touring — $29, over 1,000 pages.

Updated 2 October 2026 · the club's facts from its own site, read 23 September 2026; its rules for comics read 25 September 2026; fans' facts read 30 September 2026