Can an NRI open joint NRI Demat account?

Yes, NRI can open a joint Demat account with other NRI. To open joint account, both the NRIs have to register their KYC status with FEMA and FATCA.

Although the trading and demat account will be in the name of first NRI account holder. Once KYC is done, NRI can invest in shares and trade in equity F&O segment.