Union Square Pizza & Kitchen

Pizza Restaurants in San Francisco, California

4.4 (342)

CategoryPizza Restaurants · Coffee shop, Deli, Dessert shop, Espresso bar
Address284 O'Farrell St, San Francisco, CA 94102
AreaSan Francisco, California
Phone(415) 542-8835
Google rating 4.4 (342)

Hours

Monday11 am–11 pm
Tuesday11 am–11 pm
Wednesday11 am–11 pm
Thursday11 am–11 pm
Friday11 am–1 am
Saturday11 am–1 am
Sunday11 am–11 pm

About Union Square Pizza & Kitchen

A fast-casual pizzeria offering pizza, pasta, salads, gelato, sweets, coffee, and more! Takeout, delivery, and dine-in available. Located in the Union Square District across from Hotel Nikko and Hilton, about 1 block from Union Square.

Union Square Pizza & Kitchen is a pizza restaurant in San Francisco, California. It is listed at 284 O'Farrell St, San Francisco, CA 94102, which places it among the local businesses of San Francisco that residents and visitors turn to when they need this kind of service close by. Besides its main category, the business also describes itself as coffee shop, deli, dessert shop, so it may cover more than the name suggests.

Pizza places in the United States run from a counter with two stools and a stack of boxes to a full sit-down pizzeria with a bar, and most neighborhood shops do all three things at once: dine-in, takeout and delivery. Ordering by phone is still common and often faster than an app, and many independents charge less when you call direct because there is no platform fee. Sizes are usually listed in inches (a small around 10", a large 14", an extra-large 16" or more), and a large feeds two to three adults. Slices are sold from a display case at New York-style counters and reheated to order; whole pies take 15-25 minutes at a busy shop. Most spots take cards and mobile pay, though a few older pizzerias remain cash-only, so check the door or the listing before you order.

Hours are published for 7 days a week. On most of those days it is open 11 am–11 pm. Hours in the United States do change around federal holidays and long weekends, so a quick call before a special trip is sensible. You can reach Union Square Pizza & Kitchen at (415) 542-8835; calling is usually the quickest way to ask about availability, prices or directions. Its website is unionsquarepk.com, where you may find menus, price lists or booking options.

On Google it holds a rating of 4.4 out of 5 from 342 reviews, which is a strong result for a pizza restaurant in San Francisco and suggests consistent service.

San Francisco is in California, on the West Coast, where the climate ranges from foggy coast to hot inland valleys, wildfire season can affect air quality in late summer, and traffic is the main thing to plan around. Traffic in San Francisco peaks on weekday mornings and afternoons, so allow extra time then. Addresses read from the street number up to the city, state abbreviation and five-digit ZIP code; the map link on this page shows the exact spot.

See the other pizza restaurants in San Francisco listed below to compare ratings, hours and locations before you decide. Details on this page come from public sources and may change; confirm anything important by phone before relying on it. Business owners can claim the listing to keep it up to date.

Is this your business? Claim this listing to update details, add photos and get a verified badge; every verified claim gives $1 to charity. Want more customers? Feature it at the top of pizza restaurants in San Francisco.

Latest Google reviews

The 5 most recent reviews shown on Google Maps. Reviews belong to their authors; read all of them on Google.

Mitch Beaumont 4 months ago

Late night, finishing up work. It was 10pm and I was looking for somewhere to grab a pizza. While wandering the Union Square area, I stumbled across this place and was not disappointed. When I first arrived, there was no one else there - just the staff. I first had to check if it was open. The staff promptly told me yes and welcomed me in. I ordered a pepperoni pizza and a beer. The staff were polite and the service was quick. The pizza was fantastic. I wouldn't say I'm a pizza connoisseur, but I know what I like, and I loved this one. Over the hour i was there, it filled up with other and also some takeaway orders were placed and collected. Only reason for making down atmosphere to 4 stars was that it was a little quiet. But maybe that is normal for a Wednesday night and I know some people like quiet.

Juan Manuel Martínez Medina 4 months ago

Great spot and it's open till midnight! Great to pick up some slices. NY style pizza with some Mexican style. It's a bit costly, but worths it.

Sriram Durai 5 months ago

Union Square Pizza truly delivers an exceptional slice of Italy right to your table. From the very first bite, it’s clear that authenticity and quality are at the heart of everything they serve. The pizzas are simply outstanding—especially the pesto pizza, which strikes a perfect balance of fresh, herby flavors and a beautifully crisp crust. Pair that with their cheesy garlic bread, and you have a combination that’s both indulgent and unforgettable. What really elevates the experience is the freshly prepared spaghetti sauce served alongside the garlic bread—warm, rich, and bursting with flavor. It’s the kind of thoughtful touch that transforms a great meal into a memorable one. Beyond the food, the hospitality here is second to none. The owner goes above and beyond to make every guest feel welcome, adding a personal charm that’s rare to find. Their warmth and attention to detail truly enhance the entire dining experience. If you’re looking for authentic Italian comfort food served with genuine care, Union Square Pizza is an absolute must-visit.

Jeff Chen 8 months ago

Best pizza in San Francisco! Union Square Pizza & Kitchen was fantastic from start to finish. Ramy provided great service—friendly, fast, and made the experience even better. The New Englander pizza with hot honey was outstanding, with the perfect balance of crispy crust, savory flavor, and a touch of heat. The Chicken Bacon Ranch (CBR) was rich and satisfying, and our custom garlic pesto pizza did not disappoint. They had baklava which we had to give it a try and it was excellent and the perfect sweet finish. If you’re looking for the best pizza in San Francisco, especially near Union Square, this place is a must-try. We’ll definitely be back! 🍕🔥

Michelle Morris a year ago

On my first visit, Ramy and crew were quite accommodating to my special request for cheese on only one side of the Backyard BBQ pie. Fun dining area with a couple of tall counters and bar stools as well as standard height tables and chairs. Everything we ordered was yummy. I will be back soon!

All reviews on Google ↗

Frequently asked questions

Where is Union Square Pizza & Kitchen located?

Union Square Pizza & Kitchen is at 284 O'Farrell St, San Francisco, CA 94102, in San Francisco, California. Use the “Open in Google Maps” button on this page for directions.

What kind of business is Union Square Pizza & Kitchen?

Union Square Pizza & Kitchen is listed as a pizza restaurant and is also tagged on Google as coffee shop, deli, dessert shop.

What are the hours of Union Square Pizza & Kitchen?

Published hours are Monday: 11 am–11 pm; Tuesday: 11 am–11 pm; Wednesday: 11 am–11 pm; Thursday: 11 am–11 pm; Friday: 11 am–1 am; Saturday: 11 am–1 am; Sunday: 11 am–11 pm. Hours can change on holidays, so call before a special trip.

Is Union Square Pizza & Kitchen open on Sunday?

Yes, on Sunday it is open 11 am–11 pm.

What is the phone number of Union Square Pizza & Kitchen?

You can call Union Square Pizza & Kitchen at (415) 542-8835.

How is Union Square Pizza & Kitchen rated on Google?

Union Square Pizza & Kitchen has a Google rating of 4.4 out of 5 from 342 reviews.

Does Union Square Pizza & Kitchen have a website?

Yes, the website of Union Square Pizza & Kitchen is unionsquarepk.com (linked on this page).

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