Below is a list of 19 streets in Dartmouth starting with the letter O.

OAK ST
OAKDALE CRES
OAKDALE CRT
OAKWOOD AVE
OAKWOOD CRT
OATHILL CRES
OCHTERLONEY ST
OCONO CRT
OJIBWAY LANE
OLAND CRT
OLD BIRCH RD
OLD FERRY RD
ORDNANCE RD
ORION CRT
ORKNEY DR
ORQUEL CRT
OSBORNE AVE
OVERDALE LANE
OWEN DR