24-Hour Notary in Ontario, CA
Need a notary right now in Ontario, California? Several notaries in Ontario are available around the clock — nights, weekends, and holidays. Emergency notary services are ideal for last-minute real estate closings, hospital signings, and urgent legal documents.
Ontario has 20 notary publics listed on LocalNotaryFinder. The average customer rating across 18 rated listings is 4.7 out of 5 stars, based on 704 combined customer reviews. The UPS Store is the most-reviewed listing, with 144 reviews. 4 listings offer 24-hour availability for urgent signings. 11 of 20 are open on weekends. 10 listings offer evening hours past 6:30pm. Listings span 5 different ZIP codes across the Ontario area.
4 notaries listed in Ontario, CA.
MPI 24/7 Mobile Notary & Apostille Services
8244 Ramona Ave, Rancho Cucamonga, CA 91730
Hours
- Friday: Open 24 hours
- Monday: Open 24 hours
- Saturday: Open 24 hours
- Sunday: Open 24 hours
- Thursday: Open 24 hours
- Tuesday: Open 24 hours
- Wednesday: Open 24 hours
Zeeck’s Mobile Notary Service
3348 S Myrtle Dr, Ontario, CA 91761
Hours
- Friday: Open 24 hours
- Monday: Open 24 hours
- Saturday: Open 24 hours
- Sunday: Open 24 hours
- Thursday: Open 24 hours
- Tuesday: Open 24 hours
- Wednesday: Open 24 hours
Bailey Notary
1995 E Harvard Privado APT B, Ontario, CA 91764
Hours
- Friday: Open 24 hours
- Monday: Open 24 hours
- Saturday: Open 24 hours
- Sunday: Open 24 hours
- Thursday: Open 24 hours
- Tuesday: Open 24 hours
- Wednesday: Open 24 hours
Wet Ink Notary LLC
854 Harvest Ave, Upland, CA 91786
Hours
- Friday: Open 24 hours
- Monday: Open 24 hours
- Saturday: Open 24 hours
- Sunday: Open 24 hours
- Thursday: Open 24 hours
- Tuesday: Open 24 hours
- Wednesday: Open 24 hours
More ways to reach a notary after hours
About 4 miles away, Rancho Cucamonga has 8 notaries with 24-hour availability.
Every 24-hour listing in Ontario also lists weekend hours.
Every 24-hour listing in Ontario also lists hours past 6:30pm.
Also in Ontario:
Frequently Asked Questions — 24-Hour Notary in Ontario, California
Are there notaries open 24 hours in Ontario, CA?
Yes — 4 notaries in Ontario list 24-hour availability. These are typically mobile notaries who accept after-hours calls for urgent document needs. Always call ahead to confirm availability.
How much does an emergency notary cost in Ontario?
After-hours and emergency notary services in Ontario, CA typically add a premium on top of the standard notarization fee. Expect $50–$200 total for a late-night or weekend call, depending on urgency, travel distance, and document complexity.
What documents can I get notarized at 2am in Ontario?
A 24-hour notary in Ontario can notarize the same documents as any commissioned notary — powers of attorney, real estate documents, affidavits, loan documents, healthcare directives, and more. There is no restriction on document type based on the time of day.
Can I get a notary on the weekend in Ontario?
Yes. Many mobile notaries in Ontario, California work weekends and holidays, especially for real estate closings and hospital visits. Search the listings above and call to confirm Saturday or Sunday availability.