Yes, definitely. One person can create multiple demat accounts but with different Depository Participant or broker.
Yes, a person can have more than one Demat account in his name. There are no such restrictions on the number of Demat accounts one can open. However, there are certain points you must know before applying for more than one Demat account.
Even though it is legal to open more than one Demat account, there is a provision attached to it. One person can have more than one Demat account but not with the same Depository Participant (DP) or with the same stockbroker.
Therefore, if one person already has a Demat account with a Depository Participant or stockbroker, then he or she cannot create another Demat account with them.