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Hilton San Francisco Union Square

333 O'Farrell Street, San Francisco, California, 94102, USA TEL: +1-415-771-1400 FAX: +1-415-202-7798 To Talk to a Hotel Expert Call 1-855-786-4701
Start Planning Your Event To begin, please tell us where and when, along with what type of room(s) you'll need. Check Availability
Create or Retrieve your Personalized Group web page If you have already created a web page for your event you can retrieve it.
Hilton Promenade at Branson Landing Hotel, MO - Couple Kissing

Bed & Breakfast

Wonderful weekends in the heart of San Francisco – enjoy the fresh air and colorful city sights.

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Plan an Event

Whether you're searching for a space for that all-day business meeting, or planning a reunion or special occasion, Hilton San Francisco Union Square has all the resources you need to make your next event a memorable success. Our flexible San Francisco meeting space spans over 130,000 sq. ft. and features state-of-the-art sound, lighting, and A/V capabilities. Additionally, our Event Team offers more than 80 years of experience in ensuring successful events with flawless execution.

Meeting and Event Highlights

  • Largest hotel on the West Coast at 130,000 sq. ft.
  • On-site Certified Meeting Planners
  • Exclusive access to off-site venues, particularly City Hall and Angel Island
  • Complimentary one-day HOST pass to help event planners execute perfect events

For even more space in this downtown location, check out our sister hotel's impressive meetings and events spaces, just a few steps away - Parc 55 San Francisco - a Hilton Hotel.

Hilton San Francisco Union Square - San Francisco, CA Hotel - Conference Room

Small Meetings

With large, flexible ballrooms and more than 30 additional San Francisco meeting rooms ranging in size from 430 to over 1,000 sq. ft., our hotel offers plenty of event space in San Francisco for small gatherings. Take advantage of complete packages for small meetings that include internet connections, A/V services, and food and beverages for up to 25 persons. Break from team meetings for lunch in a unique setting at the Urban Tavern restaurant.

Hilton San Francisco Union Square - San Francisco, CA Hotel - Continental Ballroom - Rounds

Conferences and Events

Hilton San Francisco Union Square features ample space and plenty of San Francisco accommodations for your next convention or banquet. Our space measures over 134,000 sq. ft., including our 20,000 sq. ft. Continental Ballroom and our 13,500 sq. ft. Golden Gate Ballroom. If you have a grand Guest list to accommodate, our Certified Meeting Planners are on-site to help with rooms, food and beverages, and A/V services to make sure your event is handled with flawless execution.


  • At a Glance

    • Total Guest Rooms : 1921
  • Room Types

    • Largest Meeting Room : 29637 Sq. Ft. 2673 Sq. M.
  • Group Amenities

    • Business Center
    • Concierge
    • Fitness Center OnSite
    • Pool On Property
    • Restaurant On-Site
    • Standard In-Room and Lobby Wi-Fi
  • Local Airports

    • San Francisco International Airport30 min./14 mi.
    • Metropolitan Oakland International40 min./20 mi.
    • San Jose International Airport1 hr./46 mi.
Hilton San Francisco Union Square - Woman kissing Man on Cheek

Double Points Stay

Twice the rewards with the 2X Points Package on any reservation.

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