This is very strange to not have an ability to achieve this with Multi Choice Checkboxes. Considering the capacity of HubSpot as a leader in this industry, this is a small thing to not have.
It will be great if this feature got implemented as soon as possible. Noting when we create the property in the preview it is showing as Dropdown, but when actully using it in a form it is not.
Status: Not Currently Planned
Status history
+1 -- great idea. When you have too many options, the list in your face can be overwhelming for people.
+1 required for long lists
Hi Everyone,
I have developed a module that allows you to turn any HubSpot drop-down property into a search drop-down property.
I can deploy this in HubSpot Content Hub via Landing Pages or Webpages
Additionally, if you would like to add this functionality to your own CMS, I can assist with that as well.
Please feel free to reach out to me through my website if you are interested in learning more.
Contact | BradSommer.com.
Thanks,
Brad
PS. I am a long standing HubSpot Solutions Partner that has helped clients with many items just like this. If you are interested in cleaning and standardizing data with AI scoring leads with AI, building advanced workflows, designing and developing websites I can assist.
6 years, no progress? HubSpot, please react:) While there’s a native way in all the modern browsers to implement muti-select, HS forms still do not have such an element. Not in the legacy editor, nor in the new editor.
It’s great that this missing feature gives job to developers, myself included, but really it’s a so obvious thing to have available without developing.
+1
Please, please, please add this 
It looks horrible on forms the way it is. Don’t mean to sound harsh, just the stark reality…
@hubspot This has been requested so many times - surely a multi-select drop down field isn’t too difficult?
This is definitely an immediate need. Really headscratching because it was already clearly designed for the backend functionality of HubSpot. This one missing feature severely limits forms or destroys website UI when you have a multi-select checkbox with many properties.
For us, what seems like a simple multi-select ‘product interest’ field becomes a lengthy mess. This would allow us to better trigger campaign messaging from form submission and segment better. Sure, we can likely code something over the top, but why add the complexity for my team if I were to get hit by a train today?
+1 on that, how come someting so simple is not supported ? Right now it looks horrible on a website altough in hubspot it looks fine and is super useful
+1, really need this ASAP
Hey everyone,
Just a quick tip from my side—I ended up going with Paperform.
It’s been working really well so far. It integrates with HubSpot, gives you plenty of design freedom & solves the issue of not being able to multi-select in dropdown fields—even on their entry-level plan, which is quite affordable.
Hope that helps if you’re considering alternative form tools!
This is essential to have an option for multi-selector in dropdown. HubSpot - you should have taken that up considering the ticket longativity.
We ended up getting this feature developed internally by our developers, really disappointing that this has been requested for so long with no response from Hubspot..
+1
Six years later and no update on this is ridiculous. Hubspot! You have this functionality IN THE CRM! We KNOW you know how to do it! Please just make this available as an option on forms!! 
This would be really helpful, and seeing comments from 2019, why does this not already exist? We want people to complete our forms, not read War and Peace.
I’ve turned the multiple checkboxes into a fully functional dropdown multiple-selection box with all the features. Here’s how it looks:
mutiple checkbox dropdown
If anyone needs this code or wants to use these features in your form, please feel free to reach out to me. I am happy to assist you:
Email: habiburdeveloper7@gmail.com
WhatsApp: +8801635729236
LinkedIn: https://www.linkedin.com/in/habibur-rahman-developer/
This would be so great for so many of our clients using HubSpot!! Lots of options in multi-checkboxes that take up way too much space on a form.
We need this feature! Hoping this is in the roadmap for forms!
+1 Man was I disappointed to find 6 years worth of forum posts on this but HS still hasn’t made it happen 