The reality star follows former castmembers Amy Childs, Harry Derbidge and Joey Essex in signing with the management company.
Collins, who joined the hit ITV2 series last year, spoke of her excitement at working with the firm's team.
"I'm so pleased that I have signed with Can Associates," she said. "I have admired their work over the years and am really excited about the projects that they have lined up for me.
"I'm a no frills Essex girl and I am really looking forward to working with Claire and the great team they have at Can!"
Managing director Claire Powell commented: "This is an exciting time for us and for Gemma. We intend to make her a big star. Most women can relate to Gemma as she is a real woman's woman.
"She has a great determination to work hard and we see a lot of potential in her future. We already have numerous projects in the pipeline for Gemma so this is going to be a very busy time for her."
The Only Way Is Essex returns to ITV2 on January 29 at 10pm.
> 'Only Way Is Essex' Gemma Collins: 'I'm going to get Arg into shape'
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