Midland Railway 1252 Class

{{Use dmy dates|date=October 2017}}

{{Use British English|date=October 2017}}

{{one source|date=December 2014}}

{{Infobox locomotive

| name = Midland Railway 1252 class

| powertype = Steam

| image = Ashchurch 19 railway station geograph-2221418.jpg

| alt =

| caption = LMS 1251 at {{stnlnk|Ashchurch}}, September 1946

| designer = Samuel W. Johnson

| builder = Neilson and Company

| ordernumber =

| serialnumber =

| buildmodel =

| builddate = 1875–1876

| totalproduction = 30

| rebuilder =

| rebuilddate =

| numberrebuilt =

| whytetype = 0-4-4T

| uicclass = B2′ n2t

| gauge = {{track gauge|ussg}}

| driverdiameter = {{convert|5|ft|6+1/2|in|mm|0|abbr=on}}

| trailingdiameter = {{convert|3|ft|0|in|mm|0|abbr=on}}

| minimumcurve =

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| length =

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| axleload =

| weightondrivers =

| locoweight = {{long ton|53|4}}

| fueltype =

| fuelcap =

| watercap =

| tendercap =

| sandcap =

| boiler = MR type C

| boilerpressure = {{convert|140|lbf/in2|MPa|2|abbr=on}}

| feedwaterheater =

| firearea =

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| cylindercount =

| cylindersize = {{convert|17|x|24|in|mm|0|abbr=on}}

| valvegear = Stephenson

| valvetype =

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| valvelap =

| valvelead =

| transmission =

| maxspeed =

| poweroutput =

| tractiveeffort = {{convert|13810|lbf|kN|2|abbr=on}}

| factorofadhesion =

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| safety =

| operator = MR » LMS » BR

| operatorclass =

| powerclass = 1P

| numinclass =

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| withdrawndate = 1920–1954

| preservedunits =

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| disposition = All scrapped

}}

The Midland Railway 1252 class was a class of thirty 0-4-4T locomotives built by Neilson and Company in 1875–1876 to the design of Samuel Waite Johnson. They were a development of the 6 Class. Originally numbers 1262–1281 and 1252–1261. Under the Midland Railway's 1907 renumbering scheme they became 1236–1265.