Places beginning with BA in Pennsylvania, United States
- Bachmanville
- Back Mountain
- Backup Corners
- Backus
- Bacon Mill
- Bacton
- Baden
- Baden, Borough of
- Baederwood
- Bagdad
- Bagdad
- Baggaley
- Baidland
- Bailey
- Baileyville
- Bainbridge
- Bair
- Bairdford
- Bairdstown
- Baker
- Bakers
- Bakers Crossroad
- Bakers Summit
- Baker Station
- Bakerstown
- Bakerstown Station
- Bakersville
- Bakersville
- Bakerton
- Bala
- Bala-Cynwyd
- Bald Eagle
- Bald Eagle
- Bald Eagle, Township of
- Bald Hill
- Bald Hill
- Baldwin
- Baldwin
- Baldwin, Borough of
- Baldwin Furnace
- Baldwin, Township of
- Balliet
- Balliettsville
- Balls Mills
- Balltown
- Bally
- Bally, Borough of
- Balsam
- Balsinger
- Bamford
- Bandanna
- Banetown
- Baney Settlement
- Banfield
- Bangor
- Bangor, Borough of
- Banian Junction
- Banks, Township of
- Banks, Township of
- Banksville
- Bannerville
- Banning
- Baoba
- Barbertown (historical)
- Barbours
- Barclay
- Barclay, Township of
- Bard
- Bardwell
- Bareville
- Barkeyville
- Barkeyville, Borough of
- Barking
- Barlow
- Barlow Heights
- Barlow Knoll
- Barnards
- Barners Hill
- Barnes
- Barnes
- Barnes
- Barnesboro (historical)
- Barnesboro (historical), Borough of
- Barnes Gap
- Barneston
- Barnesville
- Barnettstown
- Barnett, Township of
- Barnett, Township of
- Barnitz
- Barnsley
- Barree
- Barree, Township of
- Barren Hill
- Barrett
- Barrett, Township of
- Barrisville
- Barronvale
- Barrs Corners
- Barr Slope
- Barr, Township of
- Barrville
- Barry, Township of
- Barto
- Barton
- Barton Glen
- Bartonsville
- Bart, Township of
- Bartville
- Barwood
- Basforth Acres
- Basket
- Bass Lake
- Bastress
- Bastress, Township of
- Bath
- Bath Addition
- Bath, Borough of
- Bath Junction
- Battle Hollow
- Bauerstown
- Baumgardner
- Baumstown
- Bausman
- Bavington
- Baxter
- Bayard Park (subdivision)