Colorado Business Name Search (LLC lookup) - 2025 Guide

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LLC names

Once you’ve chosen a Colorado LLC name, you need to compare it against existing businesses in the state.

This is done using the Colorado Business Entity Search tool.

And this is necessary because business names in the same state:

  • can’t be the same
  • can’t be too similar

If you file your LLC paperwork with a name that’s not available, your LLC filing will be rejected.

How do I search the Colorado business entity name database?

You can use the business entity search to compare your business name against the existing business entities registered in Colorado.

Visit the Colorado Business Name Search pages:

Colorado has two different business entity search tools for checking a potential business name: The Business Database Search and the Name Availability Search. We explain how to use both tools below.

Business Database Search

We recommend starting with this tool so you can see other businesses with similar names.

Colorado Business Database Search

Simply enter your desired LLC name in the box and click Search.

  • This database searches all business entities registered in Colorado. It shows you all similar names.
  • Don’t enter a designator (like “LLC”) during the search.

Screenshot with instructions on how to use the Colorado Business Entity Search

Name Availability Search

We recommend using this in addition to the Business Database Search to double-check that your Colorado LLC name is unique.

Name Availability Search

Simply enter your desired LLC name (including the designator (like “LLC”)) in the box and click Search.

  • You’ll get an “available” or “not available” response.
  • This tool doesn’t show you similar names already in use.

Screenshot with instructions on how to use the Colorado Business Name Availability Search

Search tips:

  • Leave out any commas, periods, apostrophes, etc.
  • You can search using uppercase or lowercase letters.


How to interpret the Colorado LLC search results

If the Business Database Search results show names that are not too similar to yours (meaning yours is distinguishable), then your Limited Liability Company name is available for use.

  • Let’s keep using the example above. If your desired name is Riverwalk Studios LLC, and the only similar names you saw were “Riverwalk Rentals” and “Riverwalk Studio Starters”, then your name should be available.
Screenshot of sample results from the Colorado Business Entity Search
Example of Colorado Business Entity Search results

If no results show up, that means your LLC name is unique and it should be available for use. To be safe, run your search again using only part of your LLC name (to double-check that there are no similar names).

  • For example, search just the word “Riverwalk” instead of Riverwalk Studios.

If your exact LLC name appears in the list of search records, your LLC name is not available for use because another Colorado business entity is already using it.

If the results show a name that is very similar to yours, your LLC name may not be available for use.

  • If your desired name is Riverwalk Studios LLC, and the search results show a “Riverwalk Studio”, then your name is not available.

Once you have a name that appears to be unique, check again using the Name Availability Search tool. If you get a message that the Name is Available, you should be good to go!

What if my desired LLC name isn’t available?

If your name is not unique, you’ll need to come up with a variation or a different name for your LLC.

Tip: Wait until your LLC is approved before you apply for your LLC EIN Number or purchase any other marketing materials. This way you don’t spend money on business supplies you can’t use because your business name isn’t available.

Colorado Secretary of State Contact Information

You can call the Colorado Secretary of State to ask questions about whether your LLC name is available.

Representatives at the Colorado Secretary of State can help you use the Colorado Business Database Search and Name Availability Search. They can’t guarantee that your LLC name will be available when you file, however.

The Business Organizations Department phone number is 303-894-2200. Their hours are 8am to 5pm Mountain Time, Monday through Friday.

Colorado Limited Liability Company Name Requirements

There are a few rules and requirements for naming a Colorado business entity that you need to know.

Do I have to use a comma in my LLC name?

No, you don’t have to. You can file your LLC name with or without a comma. Both versions are accepted by the Secretary of State.

For example: If your desired business name is Queen Bakery LLC, you can file it as:

  • Queen Bakery, LLC
  • Queen Bakery LLC

Or, instead of having “LLC” as your designator (ending), there are a few other options in Colorado.

What designators (endings) can I use in my LLC name?

Your Colorado LLC name must contain one of the following designators at the end:

  • Ltd.
  • LLC
  • L.L.C.
  • Limited
  • Ltd. Liability Co.
  • Limited Liability Co.
  • Ltd. Liability Company
  • Limited Liability Company

The following designators are not allowed

Your Colorado LLC can’t make itself sound like a Colorado Corporation or any other business entity besides an LLC.

The following words and designators can’t be used anywhere in your LLC name:

  • Inc.
  • Corp.
  • Incorporated
  • Corporation
  • Cooperative

What words are not allowed in my Colorado LLC name?

Your Colorado LLC name can’t contain words and abbreviations that are restricted by law.

For example, you can’t make your LLC name sound like it’s a bank, part of the government or a government agency, or anything else that misleads the public.

You also can’t use words that are reserved for licensed professionals. These vary by state, but some common examples are accountants, architects, attorneys, dentists, and engineers.

Your Colorado business name must be distinguishable (unique)

When you use the Colorado Secretary of State Business Database Search, you will compare your desired LLC name to existing businesses in the state. (If you use the Name Availability Search instead, the tool compares the names for you.)

If your name is not unique, you’ll need to come up with a variation or a different business name. That’s because Colorado Revised Statutes Section 7-90-601 requires business names to be distinguishable.

Below are rules and examples of LLC names that are not distinguishable.

Not distinguishable: Punctuation

Adding punctuation to the business name doesn’t create distinguishability.

If your desired LLC name is Bighorn Sheep LLC, it’s not available to use if any of the following are found in the Colorado Business Search results:

  • Big.horn.sheep LLC
  • Big’horn Sheep LLC
  • Big_Horn Sheep LLC

Not distinguishable: Capitalization

Changing the capitalization of the business name doesn’t create distinguishability.

If your desired LLC name is Lark Letters LLC, it’s not available to use if any of the following are found:

  • LARK Letters LLC
  • LaRk LeTTeRs LLC
  • lark letters LLC

How to create distinguishability

Colorado is pretty lenient with distinguishability (compared to other states). Here are some easy ways of making your desired business name distinguishable from other similarly named businesses in the state.

Designators

Differences in designators (endings) create distinguishability in Colorado.

If your desired LLC name is Jovial Brownies LLC, you can use that name even if you find any of these names in the search results:

  • Jovial Brownies, Inc.
  • Jovial Brownies Corp.
  • Jovial Brownies Ltd.
  • Jovial Brownies, Limited Liability Company

Adding Articles (Filler Words)

Adding non-meaningful or filler words (the, a, an, and, &) creates distinguishability in Colorado.

If your desired LLC name is Apple Orange LLC, you can use that name even if any of the following are found:

  • An Apple Orange LLC
  • The Apple, the Orange, LLC
  • Apple & Orange LLC

Want to watch a video tutorial instead?

The video below shows you how to search LLC names in Colorado.

The video starts with LLC name rules in Colorado. Then at the 7:30 minute mark, you can see LLC searches being completed.

Colorado LLC - Name Search

What if my Colorado business name is rejected?

If you file your Colorado Articles of Organization (the document that creates your Colorado LLC) and the business name is not available, don’t panic. The state will notify you and tell you why your filing was rejected.

You will just need to file again with a variation of your LLC name or a different LLC name.

Colorado Business Name FAQs

Matt Horwitz
Matt Horwitz
Matt Horwitz is the leading expert on LLC education, and has been teaching for 15 years. He founded LLC University in 2010 after realizing people needed simple and actionable instructions to start an LLC. He's cited by Entrepreneur Magazine, Yahoo Finance, and the US Chamber of Commerce, and was featured by CNBC and InventRight.
 
Matt holds a Bachelor's Degree in business from Drexel University with a concentration in business law. He performs extensive research and analysis to convert state laws into simple instructions anyone can follow to form their LLC - all for free! Read more about Matt Horwitz and LLC University.

9 comments on “Colorado Name Search”

Disclaimer: Nothing on this page shall be interpreted as legal or tax advice. Rules and regulations vary by location. They also change over time and are specific to your situation. Furthermore, this comment section is provided so people can share their thoughts and experience. Please consult a licensed professional if you have legal or tax questions.

  1. Wow, what a find your site and videos are Matt! Thank you so much and well done

    Reply
  2. Hi, thank you for all the information here,
    I was wondering, I registered for the EIN before the LLC, It says that its required to inculde one of the LLC abbreviation, so that what I did for the LLC registeration, However I didnt do the same for the EIN, should I change the EIN ?
    thank you

    Reply
    • Hi Sanaa, you’re very welcome :) So you obtained an EIN for your LLC (“Big Ski Lodge LLC”, as an example) before your LLC was approved. You told the IRS you have an LLC in the “What type of legal structure is applying for an EIN?” section of the EIN application, however, when it came to entering your LLC name, you entered “Big Ski Lodge” and forget to add “LLC”.

      In that case, yes, you want the full legal name or your LLC appearing on your EIN Confirmation Letter. While you can change the business name associated with the EIN, you have to mail or fax a letter to the IRS. And because of all their delays right now, you won’t get a response back for at least 2 months.

      Here’s an easier solution: Apply for a new EIN for your LLC using “Big Ski Lodge LLC”. And for the original EIN, you can file an EIN Cancellation Letter with the IRS. You can apply for the new EIN right away. You don’t have to wait for the first EIN’s cancellation to be processed. Hope that helps!

      Reply
  3. Hi I was wondering if I needed to file a DBA with my LLC if they are very similar? Like for example lets say I filed my LLC as Southwest Bakery LLC, would I need a DBA if I refer to my business as Southwest Bakery with No “LLC” at the end?

    Reply
    • Hi Minh, yes, you do. Anytime you want the LLC to represent itself without using its true and legal name, you will need to file a DBA. Hope that helps.

      Reply

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