Ministers also will legislate to give the vote to 16 and 17-year-olds in local government elections as part of the Local Government and Elections (Wales) Bill.
Bydd y Gweinidogion yn deddfu hefyd i roi’r bleidlais i bobl ifanc 16 ac 17 oed mewn etholiadau llywodraeth leol fel rhan o Fil Llywodraeth Leol ac Etholiadau (Cymru).