Cosmo's Pizza

Cosmo’s does not disappoint with their gluten-free pizza— at 16”, Cosmo’s is the biggest GF pizza I’ve ever had! The flavor was great, and the crust was one of the better crusts I’ve had. I’m a fan of a more chewy/undercooked crust, and this came out perfect for me. If you don’t prefer that, then maybe consider asking them to keep it in a little bit longer. The only inconvenience here for gluten-free eaters is that they do not do gluten-free slices— most people will come to Cosmo’s for one of their massive slices, but if you’re GF, be prepared to spend $20+ on a full-sized pizza (and wait for it to be cooked!). Cosmo’s is perfect for what it is… a casual pizza shop where you can go grab a slice.

This is our go-to basic pizza place in Boulder. There are fancier and much more expensive places but the 30th St one is fantastic. Friendly, quick service. Order a pizza online and it will be done with no mistakes in about 15 minutes for pick-up. Lots of people working behind the counter, joking around and making it a fun place to pick up a pizza. The crust is always perfect and you can get a 16" pizza with one topping, freshly made, for less than $20. They will also sell you raw dough to make your own pizza at home at a very affordable price. Althought this is more expensive than el cheapo competitors like Domino's or Papa John's, the quality is much much better and totally worth it!

The inviting ambiance and friendly staff create the perfect setting for pizza lovers. The menu offers a range of delectable options, from classic favorites to inventive creations, each delivering a flavor explosion. The efficient and friendly staff enhance the overall dining experience. For the adventurous, the Popper Pizza is a must-try – a quirky delight that adds a unique twist to the pizza experience. With Cosmos Pizza, you're not just getting a meal; you're indulging in pizza perfection. Highly recommended for an unforgettable dining experience!

I'm from Chicago and have tasted some great pizza. Cosmos is very delicious! Very impressed! My kiddos loved it too. Everyone working there had great energy.

I came here for dinner on Friday night. I called in and ordered take out. The service I got on the phone and in person was great, they were very friendly. I ordered a large pizza for $30, half Hawaiian, half meat lovers. The pizza was way good and I will definitely be returning!

Huge large pizza. 24". Friendly staff. If you are bringing it home yourself, make sure your car is big enough to be able to fit the pizza, lol. They have free delivery so take advantage of it.
Great pie. Loved it. 😎

Go for the pizza. Stay for the spicy ranch! You can’t go wrong with Cosmo’s Pizza at any time of the day. I’ve been there multiple times when I used to live in the Denver Metro Area, but the reason why I’m writing this review is because I visited recently after a long time away. When I entered at lunch time the person I believed to be the manager saw that I was a bit overwhelmed and proactively started explaining the options including the lunch special, which was two huge slices and a drink for around $9. I got that option and the slices were huge. I was full with that and 2 spicy ranches. Overall, I really appreciated the service. Good work!

Amazing veggie pizza slices but most importantly I love the team work and unity 🤝 of staff all working under same roof together happily . Heads off to manager in keeping team together and by giving best service and food .

** THIS WAS NOTICED AFTER MY 7 VISITS TO THIS LOCATION.

Definitely try out 👦 guys

One of the best pizzas in Boulder and Denver. One of their slices of pizza is about enough for an adult. Overall very nice workers from the cashier to the pizza maker.

One of my favorite pies I’ve ever had, worth the hype. Pretty girls and preppy guys, boulder lives up to it’s reputation. I’ll make sure to stop by again when I’m in town.

First time having there calzone and it was amazing! Buddy and I got the combo calzone and it was fully loaded and huge! Has sauce inside too.

4.60 for this cartoon network looking slice is an awesome deal and the employees were chill. Easiest rating pf my life

You really can’t go wrong. Spicy ranch is a must. Tomato + Basil is a favorite as well as their classic pepperoni. Type of pizza you fold and use to scoop up their ranch. Best served while drunk.

It doesn't really get much better than Cosmo's! Amazing pizzas, delicious toppings. Cooked to perfection, sauce is great too! Definitely coming back, especially since it's also open till 2am!

Great pizza place for anytime but especially the late night cravings! Prices are reasonable for the huge slices you receive if ordering by the slice!!👍☺👍

It's mostly visited by a lot of college students but the wait time is much less in my opinion than the Cosmo's Pizza thats located on The Hill... Especially for those late night cravings!! Mmmm

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BIG pizza! And tasty too! Staff was friendly, the place was busy, and the interior looked clean though the surrounding area felt a little sleazy at nighy. Would definitely go back though!

I am so so grateful to Kevin, Adam and the entire team at Cosmo's pizza. I had my wedding ceremony and reception recently at Flagstaff Sunrise Amphitheater. I was so stressed out trying to figure out how to get a caterer up there and keep all the food hot without any electricity. My husband suggested that we get Cosmo's pizza since we are both huge fans (which is saying something because I really am not much of a pizza person). When I sent an inquiry to Cosmo's to see if they can make this happen Kevin and Adam both reached out to me to ensure me that it can be done and they made it as stress free as possible. Adam agreed to speak with me over the phone to hash out the details and was SO ACCOMMODATING (I blabbed his ear off for a good 30 minutes). They hit a ten minute window that I needed the pizzas in, they provided plates, silverware, napkins, cheese and peppers. It was so flawless and perfect! So many people told me that it was a crazy idea to order pizza for my wedding ("what if they arrive late?? It's a Saturday in Boulder! This will never work!") but it worked so well! My guests LOVED it! THANK YOU THANK YOU THANK YOU!

Always a good late night stop for quality pizza. Plenty of options (by the slice or full pizza), dessert, etc.

Really good pizza. It is huge and with high quality cheese and toppings. When visiting the area, I go to Cosmo's straight from the plane, I do not even stop by the hotel.

Good late night place to end your night. The service was fast and friendly. They do take cards. A slice of pizza is more than enough to satisfy your needs, drunk or high. It's open seating. Too bad they don't serve alcohol.