
Siren
South Boulder, Boulder
Bar in Boulder, United States
Why go
Siren is worth using as a casual South Boulder cocktail stop, especially for martinis and tinned fish rather than a full dinner plan. Go early for easier seating and conversation, or use happy hour if value matters: selected drinks and snacks can land at approachable prices.
About Siren
Siren is a venue in Boulder with a casual dress code. Beyond that, the public details are limited, so the safest way to plan is to avoid assuming a specific service format, menu, drink program, reservation policy, neighborhood, or price point unless you confirm it directly with the venue before going.
Use this page as a lightweight planning note rather than a full review. Siren may be worth considering if you are looking at casual options in Boulder, but the exact experience should be checked through the venue’s own current channels.
Confirm the current offering before you plan around it
Specific menu items, food formats, and drink details have not been verified. Rather than planning around a particular dish, cocktail, or snack list, confirm the current offering directly with Siren before making it part of the night.
For broader Boulder planning, use our full Boulder restaurants guide; for drink-first planning, start with our full Boulder bars guide.
Check timing, pricing, and availability directly
Specific hours, pricing, seating, and reservation information have not been verified. If timing or budget matters, check Siren’s current details before you go rather than relying on a fixed schedule or deal.
The confirmed planning note is simple: dress is casual. That makes Siren easy to consider for a low-formality Boulder outing, while the exact mood, crowd level, and service setup should be closer to your visit.
Plan Siren as a casual Boulder option
For nearby Boulder planning, the most useful next clicks are our full Boulder hotels guide, our full Boulder wineries guide, and our full Boulder experiences guide.
If the night needs a different format, compare Siren with other unnamed Boulder dining and nightlife options based on the details that matter most to your group, such as timing, location within Boulder, and current availability.
Quick reference: Siren is in Boulder, and the dress code is casual.
Planning details
- Location
- Boulder, United States
Venue details
Ambiance
Nautical, East Coast tavern-inspired, and cozy, with Titanic-era and ship decor influences described in press coverage.
Tags
Vibe
Best For
Experience
Format
At the Bar
- Bar Category
- Cocktail Bar
- Late Night
- Closes by Midnight
Signature Pours
- martini
- maitai
- espresso martini
Planning details
Location
Boulder, United States · Directions
Explore Boulder
Around this place
Discover more on Pearl
Unlock the full Siren guide in Pearl, including awards, comparisons, FAQs, planning details, and nearby places.
FAQ
Frequently Asked Questions
Do I need a reservation at Siren?
What is Siren known for?
The only planning details are that Siren is in Boulder and has a casual dress code.













