Atlantic was the name of a very early American steam locomotive built by inventor and foundry owner Phineas Davis for the Baltimore and Ohio Railroad (B&O) in 1832.

It is in fact the first commercially successful and practical American built locomotive and class prototype, and Davis' second constructed for the B&O, his first having won a design competition contest announced by the B&O in 1830.

[1] Ox teams were used to convey the engine to Baltimore, where it made a successful inaugural trip to Ellicott's Mills, Maryland, a distance of thirteen miles (21 km).

Nicknamed the 'Grasshopper' for its distinctive horizontal beam and long connecting rods, the locomotive carried 50 psi (345 kPa; 3.45 bar) of steam and burned one short ton (0.91 t; 0.89 long tons) of anthracite coal on a 40-mile (64 km) trip from Baltimore.

7 Andrew Jackson, built in 1836 by Ross Winans and George Gillingham, and rebuilt it to resemble the 1832 Atlantic, as a heritage showpiece.