There are several Chambers of Commerce throughout PEI. Some of these Chambers of Commerce maintain business directories of local and/or member businesses.
Eastern PEI Chamber of Commerce: https://epeicc.ca/
Greater Charlottetown Area Chamber of Commerce: https://charlottetownchamber.com/
Greater Summerside Chamber of Commerce: http://www.summersidechamber.com/
Kensington and Area Chamber of Commerce: kaccpei.com
West Prince Chamber of Commerce: https://westprincechamber.com/