The Great Western Railway Caesar Class were broad gauge steam locomotives. They were designed by Daniel Gooch for goods train work. This class was introduced into service between June 1851 and February 1852, and withdrawn between June 1871 and June 1880.

From about 1865, the Caesar Class was expanded to include locomotives formerly known as Ariadne Class, Caliph Class, or GWR Pyracmon Class.

Names Build date Retire date Name Notes 1851 1880 Caesar 1851 1872 Dido 1852(?) ? Druid 1851 1874 Florence 1851 1871 Hero 1851 1872 Nora Creina The name comes from the subject of Thomas Moore's poem Lesbia has a beaming eye 1851 1874 Thunderer This name had previously been carried by a GWR 0-4-0+6 locomotive in 1838. 1851 1874 Volcano

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