Event Venues and Party Places in Ontario, California

4 listings: 4 event venues. From OpenStreetMap; call to confirm availability for your date.

Where Can You Hold a Party in Ontario, California?

We list 4 event venues and party businesses in Ontario: 4 event venues. 1 list a phone number and 1 a website. Nearby options include Montclair, Rancho Cucamonga. Book the venue first, 3–6 months ahead for a large event, then rentals and food.

Updated November 5, 2026 · Source: OpenStreetMap (refreshed November 5, 2026).

Doubletree Ballroom

Ontario

Event VenuesSource: OSM

Empire Ballroom

Ontario

Event VenuesSource: OSM

Ontario Convention Center

2000 E Convention Center Way, Ontario

Event VenuesPhone listedWebsiteSource: OSM

Treasure Banquet Hall

317 North Euclid Avenue, Ontario

Event VenuesSource: OSM

Planning a Party in Ontario

Event Venues (4 here): hosts usually book event venues and banquet halls 3–6 months ahead (6–12 for big Saturday events). Questions to ask.

No party places, party rentals, party supplies are mapped in Ontario yet; many serve the wider area, so check California and the nearby listings below. For food, see catering.broker.

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