| Babbler | Ann Arbor. |
| Babbling | Atlanta, Birmingham and Atlantic. |
| Babyish | Atlantic Coast Line. |
| Baccarat | Baltimore, Chesapeake and Atlantic. |
| Baccate | Buffalo, Rochester and Pittsburg. |
| Bacillus | Canadian Northern. |
| Bacteria | Central of Georgia. |
| Backbone | Central R. R. of New Jersey. |
| Badly | Central Vermont. |
| Badness | Chesapeake and Ohio. |
| Bagatelle | Chicago and Alton. |
| Bagpipe | Chicago and Illinois Western. |
| Bailiwick | Chicago Great Western. |
| Bailment | Chicago, Indiana and Southern. |
| Bakery | Chicago Junction. |
| Baking | Chicago, Milwaukee and Puget Sound. |
| Balconet | Chicago Union Transfer. |
| Balefully | Cincinnati, Hamilton and Dayton. |
| Ballastic | Colorado and Southern. |
| Balloonist | Colorado Midland. |
| Balmy | Erie. |
| Balustrade | Florida East Coast. |
| Bandana | Frisco Lines. |
| Bandbox | Galveston, Harrisburg and San Antonio. |
| Banded | Gulf Air Line. |
| Bandelet | Hocking Valley. |
| Bandoleer | Houston and Texas Central. |
| Bandoline | Houston, East and West Texas. |
| Bandsaw | Illinois Terminal. |
| Baneful | Indiana Harbor Belt. |
| Banefully | International and Great Northern. |
| Banished | Kansas City Southern. |
| Banishing | Missouri, Oklahoma and Gulf. |
| Banjo | National Railway of Mexico. |
| Banking | Norfolk and Western. |
| Banter | New Orleans Great Northern. |
| Bantering | New Orleans, Mobile and Chicago. |
|
Baptistry
| Northwestern Pacific. |
| Baptized | Oregon Short Line. |
| Barbarian | Oregon-Washington R. R. and Navigat'n Co. |
| Barbaric | Pennsylvania. |
| Barbarism | Philadelphia, Baltimore and Washington. |
| Barbecue | Pere Marquette. |
| Barbette | Pittsburg and Lake Erie. |
| Barbican | Quebec Central. |
| Bardism | Queen and Crescent Route. |
| Barbatine | Rio Grande and Western. |
| Barnacle | Rutland. |
| Barology | Star and Crescent Route. |
| Baronage | Sunset Route. |
| Baronial | Seaboard Air Line. |
| Baroscope | St. Louis, Iron Mountain and Southern. |
| Barque | Texas Midland. |
| Barracan | Toledo, St. Louis and Western. |
| Barricade | Western Maryland. |
| Barrister | Western Virginia. |
| Basaltic | West New Jersey and Sea Shore. |
| Bascule | Wheeling and Lake Erie. |
| Basket | Yazoo and Mississippi Valley. |
| Bassinet | Western Pacific. |
| Beatify | . . . . . . |
| Beatitude | . . . . . . |
| Beckon | . . . . . . |
| Becloud | . . . . . . |
| Becoming | . . . . . . |
| Bedraggle | . . . . . . |
| Bedrench | . . . . . . |
| Beehive | . . . . . . |
| Beetle | . . . . . . |
| Beginning | . . . . . . |
| Behavior | Ashville Line. |
| Belch | Blue Ridge Despatch. |
| Belittle | Cumberland Gap Despatch. |
| Belladonna | Grand Trunk Despatch. |
| Bellows | Jersey Central, Lake Shore Despatch. |
| Belvedere | Jersey Central Mich. Central Despatch. |
| Benefactor | Lake Shore, Lackawanna Line. |
| Benefice | Lake Shore, Lehigh Valley Route. |
| Benighted | Lackawanna Grand Trunk Line. |
| Benzine | Michigan Central Lackawanna Line. |
| Bereave | Michigan Central Lehigh Valley Route. |
| Bergamot | Norfolk and Western Despatch. |
| Bermuda | Wabash Erie Despatch. |
| Bertha | Wabash O. and W. Route. |
| Beseech | . . . . . . |
| Beset | . . . . . . |
| Bespeak | . . . . . . |
| Bestial | . . . . . . |