M
- McAdoo
- McClure
- McConnellsburg
- McDonald
- McEwensville
- McKean
- McKees Rocks
- McSherrystown
- Macungie
- McVeytown
- Madison
- Mahaffey
- Mahanoy City
- Malvern
- Manchester
- Manheim
- Manns Choice
- Manor
- Manorville
- Mansfield
- Mapleton
- Marcus Hook
- Marianna
- Marietta
- Marion Center
- Marion Heights
- Marklesburg
- Markleysburg
- Mars
- Martinsburg
- Marysville
- Masontown
- Matamoras
- Mayfield
- Mechanicsburg
- Mechanicsville
- Media
- Mercer
- Mercersburg
- Meshoppen
- Meyersdale
- Middleburg
- Middleport
- Middletown
- Midland
- Midway
- Mifflin
- Mifflinburg
- Mifflintown
- Milesburg
- Milford
- Millbourne
- Mill Creek
- Millersburg
- Millerstown
- Millersville
- Mill Hall
- Millheim
- Millvale
- Mill Village
- Millville
- Milton
- Minersville
- Modena
- Mohnton
- Monaca
- Monroe
- Mont Alto
- Montgomery
- Montoursville
- Montrose
- Moosic
- Morrisville
- Morton
- Moscow
- Mount Carbon
- Mount Carmel
- Mount Gretna
- Mount Holly Springs
- Mount Jewett
- Mount Joy
- Mount Lebanon
- Mount Oliver
- Mount Penn
- Mount Pleasant
- Mount Pocono
- Mount Union
- Mountville
- Mount Wolf
- Muncy
- Munhall
- Municipality of Monroeville
- Municipality of Murrysville
- Municipaliy of Norristown
- Myerstown
Read more about this topic: List Of Towns And Boroughs In Pennsylvania