Kishan will join the likes of Suresh Raina and Rohit Sharma who have already been signed up by the company.
On the association, Ceat Ltd MD Anant Goenka said: "Our objective is to identify young talent and support them in their international cricketing journey. Thus, we have signed the very promising Ishan Kishan as Ceat's youngest on-field representative."
The company has once again chosen a cricketer who lives up to the Ceat brand that resonates with qualities of energetic youthfulness and dynamism, he added.
As part of the deal, the young wicketkeeper-batsman will use bat prominently displaying the Ceat insignia in all formats of the game.
The association has been facilitated by IOS Sports & Entertainment, a company that exclusively manages Ishan Kishan, Ceat said.
Kishan, who led the Indian team which finished runner-up in the just concluded ICC U-19 World Cup tournament, had made his Ranji trophy debut against Assam in December 2014.