GWR 1101 Class

{{Use dmy dates|date=February 2018}}

{{Use British English|date=February 2018}}

{{Infobox Locomotive

|powertype=Steam

|name = GWR 1101 Class

|image = Swansea Danygraig Depot Collett GWR 0-4-0 Dock Tank geograph-2591752-by-Ben-Brooksbank.jpg

|caption = No. 1105 at Danygraig Depot 1946

|designer = Charles Collett

|builder = Avonside Engine Company

|serialnumber = 1987–1992

|ordernumber = GWR lot 246

|builddate = 1926

|totalproduction = 6

|whytetype = 0-4-0T

|uicclass = B n2t

|gauge = {{Track gauge|uksg|allk=on}}

|driverdiameter = {{convert|3|ft|9+1/2|in|m|3|abbr=on}}

|wheelbase = {{convert|6|ft|6|in|m|2|abbr=on}}

|length = {{convert|25|ft|5+1/2|in|m|2|abbr=on}} over buffers

|width = {{convert|8|ft|8|in|m|3|abbr=on}}

|height = {{convert|11|ft|10|in|m|3|abbr=on}}

|axleload = {{long ton|19|8}}
({{convert|19|LT|8|Lcwt|ST|1|abbr=on|disp=output only}}) full

|locoweight = {{long ton|38|4}}
({{convert|38|LT|4|Lcwt|ST|1|abbr=on|disp=output only}}) full

|fueltype = Coal

|fuelcap =

|watercap = {{convert|1000|impgal|abbr=on}}

|cylindercount = Two, outside

|cylindersize = {{convert|16|x|24|in|mm|0|abbr=on}}

|firearea = {{convert|12.5|sqft|m2|abbr=on}}

|fireboxarea = {{convert|76|sqft|m2|abbr=on}}

|tubearea = {{convert|788|sqft|m2|abbr=on}}

|totalsurface = {{convert|864|sqft|m2|abbr=on}}

|boilerpressure = {{convert|170|lbf/in2|MPa|2|abbr=on}}

|tractiveeffort = {{convert|19510|lbf|kN|abbr=on}}

|operator = GWR » BR

|fleetnumbers = 1101–1106

|powerclass= GWR: B

|axleloadclass = GWR: Red

|withdrawndate = 1959–1960

|disposition = All scrapped

}}

The GWR 1101 Class was a class of 0-4-0T side tank steam locomotives built by the Avonside Engine Company to the order of the Great Western Railway in 1926 as dock shunters.