Meetings & EventsWhere Big Ideas Meet Bold Spaces
Meetings & Events Where Big Ideas Meet Bold SpacesHilton San Francisco Union Square offers a premier destination for meetings and events, featuring flexible venues, advanced technology, and expert planning support. Located in the heart of downtown, our spaces are designed to accommodate everything from executive sessions to large-scale conferences with efficiency and style.
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Find and book meeting space for up to 35 people.
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For room blocks big and small, at all Hilton hotels and brands.
The Largest Hotel in California
With 134,000 sq. ft. of meeting space, including a 30,000 sq. ft. Grand Ballroom and our new Continental Ballroom, our hotel is ideal for meetings for up to 2,000 people. Our Executive Conference Center boasts four separate boardrooms and our Cityscape Lounge has 360 degree views of the San Francisco skyline. We have a total of 73 function rooms, and all rooms have wireless high speed internet capability.
Executive Conference Center
Host impactful gatherings in our four private boardrooms, designed for groups of 10-16. Perfect for everything from strategic meetings to networking receptions.
- 74 Meeting Rooms
- 1,921 Guest Rooms
- Total Event Space 205,843 square feet
- Largest Room Setup 29,637 square feet
Event Services
Create a Custom Menu with seasonal ingredients
Choose a Theme from our collections or customize your own
Dedicated Support from your on-site Events Team
Access Onsite AV through our on-site partner, Encore
Design Your Layout to match your vision
Meet with Purpose with sustainability and community engagement
Event Services Team
A dedicated, tenured event manager partners with you from concept to completion, providing 24/7 support. We anticipate challenges and orchestrate every detail, guaranteeing a flawlessly executed event that allows you to be a guest at your own occasion.
Culinary
Taste the season with every bite. Our culinary team designs curated menus that highlight seasonal ingredients, tailored to your event’s narrative. From artfully plated dinners to interactive stations, we create memorable culinary experiences that delight and impress.
AV & Production
Experience technology that works as hard as you do. Our exclusive on-site partnership with Encore delivers seamless, professional production. From immersive sound and lighting to dynamic presentations, their expert team ensures your message is seen, heard, and remembered without a hitch.
Event Branding
Go beyond a logo; create an immersive environment. We help you weave your brand into the very fabric of your event, from custom signage and thematic decor down to branded key cards and digital displays, ensuring a cohesive and powerful experience from the moment guests arrive.
Cityscape Sky Bar Events
Elevate your reception—literally. Host an unforgettable gathering at Cityscape, San Francisco’s highest sky bar. Amidst sophisticated ambiance, you and your guests will enjoy handcrafted cocktails and gourmet bites with breathtaking, 360-degree panoramic views of the city skyline.
Meet with Purpose
Make your meeting matter. Our “Meet with Purpose” program empowers you to host impactful events through carbon-conscious practices, waste reduction, and partnerships with neighboring non-profits. It’s a turnkey approach to sustainable events that benefits both the planet and our community.
Package Express
Ship with certainty. Our Package Express service provides a streamlined, secure solution for all your event materials. We manage the receiving, tracking, and storage of your shipments with meticulous care, ensuring everything is waiting for you, so you can focus on the event itself.
Moscone Convention Center
Maximize your time and convenience. Our unparalleled Union Square location places you just a short, pleasant walk from the Moscone Convention Center. Eliminate long commutes and simplify your logistics, giving you more time to prepare, connect, and explore the city.
Capacity Chart
| Event Room Name | Banquet | Conference | Square | Reception | School Room | Theatre | U-Shape |
|---|---|---|---|---|---|---|---|
| Grand Ballroom29,637 Square Feet | 2700 | Not available | Not available | 3400 | 1200 | Not available | Not available |
| Grand Ballroom B19,980 Square Feet | 1760 | Not available | Not available | 2290 | 800 | 2250 | Not available |
| Continental Ballroom19,152 Square Feet | 1620 | Not available | Not available | 2100 | 1200 | 2200 | Not available |
| Golden Gate Rooms14,592 Square Feet | 700 | Not available | Not available | 929 | Not available | Not available | Not available |
| Yosemite Room11,685 Square Feet | 742 | Not available | 1350 | Not available | Not available | Not available | Not available |
| Grand Ballroom A9,657 Square Feet | 870 | Not available | Not available | 1110 | 400 | 900 | Not available |
| East Lounge6,760 Square Feet | 160 | Not available | Not available | 900 | Not available | Not available | Not available |
| South Lounge6,760 Square Feet | 160 | Not available | Not available | 900 | Not available | Not available | Not available |
| Imperial Ballroom6,642 Square Feet | 500 | Not available | 80 | 780 | 300 | 750 | Not available |
| Plaza Room6,237 Square Feet | 480 | Not available | Not available | 700 | 348 | Not available | Not available |
| Franciscan Room5,184 Square Feet | 500 | Not available | Not available | 785 | Not available | Not available | Not available |
| Continental Ballroom 54,200 Square Feet | 400 | Not available | 60 | 473 | 180 | 475 | 56 |
| Continental Ballroom 44,116 Square Feet | 400 | Not available | 60 | 473 | Not available | 475 | 56 |
| Continental Ballroom 64,116 Square Feet | 400 | Not available | 60 | 473 | 180 | 475 | 56 |
| Imperial A3,280 Square Feet | 230 | 44 | 48 | 380 | 120 | 360 | 42 |
| Imperial B3,280 Square Feet | 230 | 44 | 48 | 380 | 120 | 360 | 42 |
| Plaza A3,240 Square Feet | 230 | Not available | 48 | 370 | 201 | 380 | 42 |
| Plaza B2,997 Square Feet | 220 | Not available | 48 | 350 | 201 | Not available | 42 |
| West Lounge2,750 Square Feet | 60 | Not available | Not available | 150 | Not available | Not available | Not available |
| California Room1,734 Square Feet | Not available | Not available | Not available | Not available | Not available | Not available | Not available |
| North Lounge1,625 Square Feet | Not available | Not available | Not available | 300 | Not available | Not available | 90 |
| Yosemite B1,536 Square Feet | 130 | 40 | 45 | 180 | 60 | 160 | 39 |
| Grand Ballroom Foyer1,311 Square Feet | Not available | Not available | Not available | Not available | Not available | Not available | Not available |
| Yosemite A1,127 Square Feet | 90 | 38 | 42 | 130 | 48 | 130 | 36 |
| Yosemite C1,104 Square Feet | 90 | 38 | 42 | 130 | 48 | 130 | 36 |
| Continental Ballroom 21,080 Square Feet | 90 | 40 | Not available | 124 | 72 | 120 | Not available |
| Continental Ballroom 81,080 Square Feet | 90 | 40 | 40 | 124 | 48 | 120 | 33 |
| Franciscan B1,080 Square Feet | 80 | 40 | 40 | 130 | 34 | 100 | 36 |
| Franciscan C1,080 Square Feet | 80 | 40 | 40 | 130 | 34 | 100 | 36 |
| Franciscan D1,080 Square Feet | 80 | 40 | 40 | 130 | 34 | 100 | 36 |
| Green Room1,056 Square Feet | 25 | 20 | Not available | Not available | Not available | Not available | Not available |
| Golden Gate 21,032 Square Feet | 70 | 36 | 42 | 120 | 63 | 110 | 32 |
| Golden Gate 31,032 Square Feet | 70 | 36 | 42 | 120 | 78 | 110 | 32 |
| Golden Gate 41,032 Square Feet | 70 | 36 | 42 | 120 | 63 | 110 | 32 |
| Golden Gate 71,032 Square Feet | 70 | 36 | 42 | 120 | 63 | 110 | 32 |
| Golden Gate 81,032 Square Feet | 70 | 36 | 42 | 120 | 63 | 110 | 32 |
| Executive Boardroom1,024 Square Feet | 25 | 20 | Not available | Not available | Not available | Not available | Not available |
| Golden Gate 61,008 Square Feet | 70 | 36 | 42 | 120 | 63 | 110 | 32 |
| Franciscan A990 Square Feet | 80 | 40 | 40 | 130 | Not available | 100 | 36 |
| Golden Gate 5984 Square Feet | 70 | 36 | 42 | 120 | 63 | 110 | 32 |
| Union Square 15 and 16930 Square Feet | 80 | 52 | Not available | 110 | 40 | 110 | 30 |
| Continental Ballroom 1920 Square Feet | 80 | 40 | 36 | 106 | 60 | 100 | 30 |
| Continental Ballroom 3920 Square Feet | 80 | 40 | 36 | 106 | 40 | 100 | 30 |
| Continental Ballroom 7920 Square Feet | 80 | 40 | 36 | 106 | 40 | 100 | 30 |
| Continental Ballroom 9920 Square Feet | 80 | 40 | 30 | 106 | 40 | 100 | 30 |
| Golden Gate 1759 Square Feet | 50 | 30 | 32 | 90 | 45 | 70 | 28 |
| Union Square 1 and 2735 Square Feet | 60 | 40 | Not available | 85 | 32 | 90 | 30 |
| Union Square 3 and 4735 Square Feet | 60 | 40 | Not available | 85 | 32 | 90 | 30 |
| Union Square 5 and 6720 Square Feet | 60 | 40 | Not available | 85 | 32 | 90 | 30 |
| Union Square 14600 Square Feet | 50 | 34 | Not available | 70 | 26 | 60 | 27 |
| Union Square 13540 Square Feet | 50 | 34 | Not available | 70 | 26 | 60 | 27 |
| Union Square 21540 Square Feet | 50 | 34 | Not available | 60 | 26 | 70 | 27 |
| Union Square 15465 Square Feet | 40 | 24 | Not available | 55 | 20 | 50 | 14 |
| Union Square 16465 Square Feet | 40 | 24 | Not available | 55 | 20 | 50 | 14 |
| Union Square 20450 Square Feet | 40 | 24 | Not available | 55 | 20 | 50 | 14 |
| Seacliff Room440 Square Feet | Not available | 16 | Not available | Not available | Not available | Not available | Not available |
| Union Square 19435 Square Feet | 40 | 24 | Not available | 55 | 20 | 50 | 14 |
| Union Square 18405 Square Feet | 30 | 22 | Not available | 50 | 14 | 50 | 14 |
| Union Square 2405 Square Feet | 30 | 22 | Not available | 40 | 14 | 50 | 14 |
| Union Square 4405 Square Feet | 30 | 22 | Not available | 45 | 14 | 50 | 14 |
| Presidio Room391 Square Feet | Not available | 12 | Not available | Not available | Not available | Not available | Not available |
| Union Square 6390 Square Feet | 30 | 22 | Not available | 45 | 14 | 50 | 14 |
| Union Square 10360 Square Feet | 30 | 22 | Not available | 40 | 16 | 40 | 15 |
| Union Square 11360 Square Feet | 30 | 22 | Not available | 40 | 16 | 40 | 15 |
| Union Square 9360 Square Feet | 30 | 22 | Not available | 40 | 16 | 40 | 15 |
| Union Square 12345 Square Feet | 30 | 22 | Not available | 40 | 16 | 40 | 15 |
| Union Square 8345 Square Feet | 30 | 22 | Not available | 40 | 16 | 40 | 15 |
| Marina Room340 Square Feet | Not available | 10 | Not available | Not available | Not available | Not available | Not available |
| Union Square 1330 Square Feet | 30 | 16 | Not available | 40 | 14 | 40 | 14 |
| Union Square 3330 Square Feet | 30 | 16 | Not available | 40 | 14 | 40 | 14 |
| Union Square 5330 Square Feet | 30 | 16 | Not available | 40 | 14 | 40 | 14 |
| Sunset Room315 Square Feet | Not available | 12 | Not available | Not available | Not available | Not available | Not available |
| Union Square 17315 Square Feet | 30 | 16 | Not available | 40 | 14 | 40 | 14 |
| Union Square 7299 Square Feet | 20 | 8 | Not available | 40 | 8 | 20 | 8 |
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