Ontario Parties Events

Parties Happening Next in Ontario, CA

Crazy, Scary Spooky, Hilarious (Halloween Party)

 Mix Champagne Lounge 24 Oct 2025
HALLOWEEN FREE

Ontario Arts Festival

 217 S Lemon Ave 18 Oct 2025
ART FREE

Remix Karaoke Nite (Free B4 10:30pm w RSVP) $100 Contest

 Mix Champagne Lounge 3 Oct 2025
MUSIC FREE

Michael Blackson at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 25 Oct 2025
COMEDY

C.O.P.E.'s 25th Anniversary Gala

 Lumcolor- Phoenix Center 18 Oct 2025
NONPROFIT USD 109

Morrissey Concert after party in Ontario! Oct 18th

 Hamburger Mary's Ontario 18 Oct 2025
ENTERTAINMENT USD 13

🎉 C.O.P.E.’s 25th Anniversary & Awards Gala 🎉

 Lumcolor Phoenix Center 11255 Central Ave Bldg 2, Ontario, CA 91762 18 Oct 2025
COMEDY

American Legion Ontario back with a Vengeance

American Legion Post 112, Ontario CA 4 Oct 2025

Darryls Strumming at Strum Brewing Co.!

 Strum Brewing Company 12 Oct 2025
ART

BLAC Oscars

 Bombay Banquet Hall & Events Center 4 Oct 2025
BUSINESS USD 66 TO 535

New Haven Community Business Mixer

 3260 Rutherford Dr 10 Oct 2025
FREE

Hunter Syndrome Awareness Week Friends and Family Gathering

 4120 E 4th St, Ontario, CA 91764-5260, United States 4 Oct 2025

TI - TIP Clifford Joseph Harris at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 14 Nov 2025
COMEDY

Ontario (IE) TopGolf Pastor's Appreciation 2025

 Topgolf Ontario 9 Oct 2025
GOLF FREE

Funny Marco at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 10 Oct 2025
COMEDY

Masquerade Soiree, LIBRA Party, BOMBAY Ultra Lounge

 Bombay Ultra Lounge 18 Oct 2025
PARTIES USD 23 TO 176

Neema Naz at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 6 Nov 2025
COMEDY

Latinicima Awards Dinner

 Delta Hotels Ontario Airport 11 Oct 2025

SCBCC 3rd ANNUAL BUSINESS AWARDS GALA

 Azure Hotel & Suites 1945 E Holt Blvd, Ontario, CA 91761 18 Oct 2025
BUSINESS

Michael Blackson

 Ontario Improv 24 Oct 2025
CONTESTS

The Mix & Mingle Tour 2025 starring Sheryl Underwood, Kyle Erby & Mike Washington

 Ontario Improv Comedy Club 8 Nov 2025

Hocus Pocus Drag Brunch

 Ontario Improv Comedy Club 5 Oct 2025
BRUNCH

Ontario High School Reunion - Class of 2000 and more!

 Whispering Lakes Golf Course 18 Oct 2025
WORKSHOPS USD 45

Hocus Pocus Drag Brunch

 Ontario Improv 4 Oct 2025
BRUNCH

Lavell Crawford at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 31 Oct 2025
COMEDY

Celebrate Fall Dance

 Misty's Lounge Night Club 19 Oct 2025
ENTERTAINMENT

Gypsy Dreams - Fleetwood Mac - San Antonio Hospital Fall Celebration, Ontario CA

 1150 S Vineyard Ave, Ontario, CA 91761 4 Oct 2025
NONPROFIT

Spooky Szn Treasure Hunt

 1010 E Mission Blvd, Ontario, CA, United States, California 91761 11 Oct 2025
TRIPS-ADVENTURES

Porsche Cars & Coffee at Porsche Ontario

 2262 East Inland Empire Blvd., Ontario, CA, United States, California 91764 26 Oct 2025

LaRan Breast Cancer Awareness Hair Extravaganza

 Delta Hotels Ontario Airport 26 Oct 2025
HEALTH-WELLNESS USD 55

Delta After Dark: Mystery at Crimson Manor

 Anthony Munoz Community Center 12 Oct 2025
TRIPS-ADVENTURES USD 135

Jeff Garcia

 Ontario Improv 13 Dec 2025
CONTESTS

Marlon Wayans at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 18 Dec 2025
COMEDY

CEF's Top Golf Tournament

 Topgolf (Ontario) 12 Oct 2025
SPORTS

Gianmarco Soresi at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 9 Sep 2025
COMEDY

Gaitlin Roberson Live: Ontario Improv

 Ontario Improv Comedy Club 22 Oct 2025

T.I. (TIP Harris)

 Ontario Improv 13 Nov 2025
TRIPS-ADVENTURES

Disney On Ice presents Let's Dance!

 Toyota Arena 26 Dec 2025
PARTIES

Disney On Ice presents Let's Dance!

 Toyota Arena 27 Dec 2025
PARTIES

Holiday Mixer: Jingle & Mingle – Made in the IE

 Left Coast Brewing Distillery Smokehouse - Ontario 13 Nov 2025
CONTESTS USD 23

Disney On Ice presents Let's Dance!

 Toyota Arena 28 Dec 2025
PARTIES

🎃👻 FREEky Friday: Family Halloween Party at Big Al’s! 👻🎃

 4120 E. 4th St., Ontario, CA, United States, California 91764 31 Oct 2025
HALLOWEEN

Ontario Reign vs. Coachella Valley Firebirds

 Toyota Arena - Ontario 2 Jan 2026
TRIPS-ADVENTURES

Parking Spiritbox

 Toyota Arena - Ontario 13 Nov 2025
TRIPS-ADVENTURES

Morrissey with Social Distortion

 Toyota Arena - Ontario 19 Oct 2025

TobyMac

 Toyota Arena - Ontario 20 Feb 2026

Disney On Ice: Let's Dance!

 Toyota Arena - Ontario 24 Dec 2025
TRIPS-ADVENTURES

The Dirty Show

 Ontario Improv 14 Oct 2025
TRIPS-ADVENTURES

Alfred Robles *Special Taping* at Ontario Improv Comedy Club

 Ontario Improv Comedy Club 7 Nov 2025
COMEDY

Lil Duval

 Ontario Improv 16 Oct 2025
TRIPS-ADVENTURES

Steve Trevino

 Ontario Improv 3 Dec 2025
TRIPS-ADVENTURES

Kelly Davids

 Ontario Improv 8 Oct 2025
CONTESTS

Mojo Brookzz

 Ontario Improv 21 Jan 2026
CONTESTS

December 2025"Grinchmas"

 Azure Hotel & Suites Ontario Airport 5 Dec 2025
WORKSHOPS

Night at the Ontario Reign Game and Jersey Auction

 Toyota Arena 4 Jan 2026

Roastournament Battle

 Ontario Improv 13 Oct 2025
CONTESTS

Neema Naz

 Ontario Improv 5 Nov 2025
TRIPS-ADVENTURES

Disney On Ice presents Let's Dance! - Ontario

 Toyota Arena - Ontario 25 Dec 2025
CONTESTS

Samantha Hale

 Ontario Improv 10 Feb 2026
TRIPS-ADVENTURES

Parking Disney On Ice presents Let's Dance! - Ontario

 Toyota Arena - Ontario 25 Dec 2025
CALENDAR

Singles Party [Vendors Welcome]

 Ontario 15 Jul 2025
PARTIES FREE

AMERICAN LEGION ONTARIO

 American Legion Post 112, Ontario CA 25 Oct 2025

Neema Naz (21+)

 Ontario Improv Comedy Club 7 Nov 2025
COMEDY

Roastournament Battle

 Ontario Improv Comedy Club 15 Oct 2025
COMEDY

Sheryl Underwood

 Ontario Improv 8 Nov 2025

Shang

 Ontario Improv 28 Oct 2025
TRIPS-ADVENTURES

Tuesday Night Trivia at Eureka! Ontario

 Eureka! Ontario 5 Mar 2024

Sophie Buddle

 Ontario Improv 2 Dec 2025
TRIPS-ADVENTURES

The Dirty Show

 Ontario Improv Comedy Club 16 Oct 2025
COMEDY

Amazing Scavenger Hunt! - Ontario‘s Hidden Treasures Hunt

 233 N Euclid Ave 3 Nov 2024
TRIPS-ADVENTURES USD 15