Montana Cities
- Babb, MT
- Bainville, MT
- Baker, MT
- Bald Butte, MT
- Ballantine, MT
- Balmont, MT
- Bannack, MT
- Barber, MT
- Barite, MT
- Barker, MT
- Barretts, MT
- Bascom, MT
- Baseline, MT
- Basin, MT
- Batavia, MT
- Baxter, MT
- Bay Horse, MT
- Baylor, MT
- Beacon Point, MT
- Beals, MT
- Bear Dance, MT
- Bearcreek, MT
- Bearmouth, MT
- Beartown, MT
- Beaver Creek, MT
- Beaverton, MT
- Becket, MT
- Bedford, MT
- Beebe, MT
- Beehive, MT
- Belfry, MT
- Belgrade, MT
- Belknap, MT
- Belle Creek, MT
- Belltower, MT
- Belmont, MT
- Belt, MT
- Belt Creek, MT
- Benchland, MT
- Bend, MT
- Benteen, MT
- Benz, MT
- Benzien, MT
- Bernice, MT
- Biddle, MT
- Biem, MT
- Big Arm, MT
- Big Sag, MT
- Big Sandy, MT
- Big Sky, MT
- Big Sky Colony, MT
- Big Stone Colony, MT
- Big Timber, MT
- Bigfork, MT
- Bighorn, MT
- Billings, MT
- Bing, MT
- Birch Creek Colony, MT
- Birdseye, MT
- Birney, MT
- Birney Day School, MT
- Bisel, MT
- Bison, MT
- Black Eagle, MT
- Blackfoot, MT
- Blackleaf, MT
- Blacktail, MT
- Blackwood, MT
- Blair, MT
- Blatchford, MT
- Bloomfield, MT
- Blossburg, MT
- Bluffport, MT
- Blythe, MT
- Bole, MT
- Bond, MT
- Boneau, MT
- Bonfield, MT
- Bonner, MT
- Bonner-West Riverside, MT
- Borax, MT
- Boulder, MT
- Bowdoin, MT
- Bowler, MT
- Box Elder, MT
- Boyd, MT
- Boyes, MT
- Bozeman, MT
- Bradman, MT
- Brady, MT
- Brandenberg, MT
- Brandon, MT
- Bredette, MT
- Brewer, MT
- Bridger, MT
- Brisbin, MT
- Broadus, MT
- Broadview, MT
- Broadwater, MT
- Brock Creek, MT
- Brockton, MT
- Brockway, MT
- Brooks, MT
- Browning, MT
- Bruno, MT
- Brusett, MT
- Bryson, MT
- Buell, MT
- Buelow, MT
- Buffalo, MT
- Bull Lake, MT
- Bull Mountain, MT
- Bundy, MT
- Burnham, MT
- Burns, MT
- Busby, MT
- Busch, MT
- Busteed, MT
- Butte, MT
- Butte Creek, MT
- Buxton, MT
- Bynum, MT
- Byrne, MT
