Events in

Ontario, California

Find events in Ontario to connect with people who share your interests. Whatever your interest, Meetup helps you connect with like-minded people.

Events in Ontario

Browse the most popular activities in Ontario

Sat, Jan 3, 2026 · 8:30 AM PST

What brings you to Meetup today?

Events in Ontario today

Check out the best activities in Ontario today

Sat, Dec 27 · 3:00 PM PST

Dungeons And Dragons (5E)

by Game Nights Gaming Group

Sat, Dec 27 · 8:30 AM PST

Level 3 Chino/ Chino Hills 22mi (Paris Baguette, it's all about the coffee!)

by BOBie Cycling Club

Sat, Dec 27 · 7:00 PM PST

Money, Mindset & Wealth: A Financial Growth Meetup

by Money, Mindset & Wealth: A Financial Growth Meetup

Sat, Dec 27 · 2:00 PM PST

Free-Start your own side hustle busness with our wide format vinyl printer

by UMakers Meetup Group

Sat, Dec 27 · 12:00 PM PST

Holiday Open House

by Salsa Caliente

Sat, Dec 27 · 12:01 PM PST

FREE PHOTOMUG CLASS

by UMakers Meetup Group

Sat, Dec 27 · 12:00 PM PST

LASER ENGRAVER WORKSOP SIDE HUSTLES

by UMakers Meetup Group

Sat, Dec 27 · 9:00 AM PST

JIU-JITSU SAT @ 9AM (FONTANA, CA)

by ESKRIMA

Events in Ontario this weekend

Browse the most interesting activities of the weekend in Ontario

$25.00

Sun, Dec 28 · 3:00 PM PST

End-of-the-Year Energy Cleansing

by Holistic Healers Community

Sun, Dec 28 · 4:00 PM PST

Blissful Sunday Meditation - A Calm Mind Brings Happiness

by Happiness Through Meditation

Sun, Dec 28 · 9:30 AM PST

Nithyananda Yoga - Authentic Agamic Yoga In Person

by Kailasa USA - Nithyanandeshwara Hindu Temple

Sun, Dec 28 · 1:00 PM PST

Free CNC Router Workshop-Learn-Design-Make and Take home

by UMakers Meetup Group

Sun, Dec 28 · 10:00 AM PST

Hybrid Sunday Spiritual Gathering

by Pomona Spiritual Practice Meetup

Sat, Dec 27 · 12:01 PM PST

FREE PHOTOMUG CLASS

by UMakers Meetup Group

Sat, Dec 27 · 12:00 PM PST

LASER ENGRAVER WORKSOP SIDE HUSTLES

by UMakers Meetup Group

Sun, Dec 28 · 8:00 AM PST

Marshall canyon mud sling: Singletrack Adventure: Mountain GOAT Bike Ride

by Mtn GOAT Bike Riders

Most popular groups in Ontario

And if you don't find the right group for you, you can always start your own!

Frequently Asked Questions

If you want to meet new people, socialize more, or even explore dating-friendly events in Ontario, you'll find plenty of group activities or singles-friendly meetups here. These events are a great way to connect naturally and avoid feeling lonely while having fun.

Absolutely! From hiking groups to relaxed outdoor walks, you can check out all our open-air events here

Yes! From running and yoga to football, volleyball, and fitness classes, you can discover a wide range of sports and active meetups in Ontario here

You can discover concerts, open-mic nights, DJ sets, and other live music events in Ontario right here

Yes! To see everything taking place today—from workshops to social gatherings—just check the full list here

You can browse all upcoming weekend events in Ontario—including outdoor meetups, social activities, and more—here