Bavarian B IIIs were steam locomotives of the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn).

Eight examples were delivered by Maffei in 1852; the remainder came from Hartmann. The machines by Hartmann had great similarity to those of the Class A IV, which were manufactured at the same time. Unlike the Hartmann engines, these locomotives also had a steam dome. This was later added to the Hartmann variants. All the engines had a Crampton boiler with smooth tubes and a Kirchweger condenser.

They were equipped with a 3 T 5 tender.

• Royal Bavarian State Railways
• List of Bavarian locomotives and railbuses

• Railways of Germany forum

v t e Classes of Bavarian locomotive and railcars
Early locomotives	Adler Jupiter and Juno Vesta and Venus Vulkan and Mars Merkur and Diana A I A II A III A IV A V B I B II B III B IV B V B V (artic) C I C II
Passenger and express train locomotives	B VI B VII B VIII B IX (old) B IX B X B XI Zw B XI Vbd C V AA I S 2/5 (Vauclain) S 2/5 S 2/6 S 3/5 N S 3/5 H S 3/6 P 2/4 P 3/5 N P 3/5 H
Goods train locomotives	C II C III C IV Zw C IV Vbd C VI E I E I (Vauclain) BB I G 3/4 N G 3/4 H G 4/5 N G 4/5 H G 5/5
Tank locomotives	D I D II D II (old) D III D IV D V D IX D XII Pt 2/3 Pt 2/4 N Pt 2/4 H Pt 2/5 N Pt 2/5H Pt 3/6 Gt 2×4/4 R 3/3 R 4/4
Branch line locomotives	D VI D VII D VIII D X D XI BB II PtL 2/2 (Maffei) PtL 2/2 (Krauss) PtL 3/3 PtL 3/4 PtzL 3/4 GtL 4/4 (GtL 4/5 - DRG 98.10) (GtL 4/5 - DRG 98.11)
Narrow gauge locomotives	LE Pts 3/4 Gts 4/4 Gts 2x3/3
Electric locomotives	ES 1 EP 1 EP 2 EP 3 EP 4 EP 5 EG 1 EG 2 EG 3 (EG 4) (EG 5)
Railbuses	Krauss railmotor MCi MBCi MCCi MBCL MPL D4ieIT (D4ieIT variant - DRG ET 85)
Bavarian Ostbahn locomotives	A 1 – A 12 A 13 – A 24 A 1 – A 2 B 1 – B 66 B 67 – B 78 B 79 – B 90 B 91 – B 96 B 97 – B 109 C 1 – C 12 C 13 – C 64 D 1 – D 12 D 13 – D 14
Royal Bavarian State Railways