GNR Class C2

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

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

{{one source|date=December 2014}}

{{About|the Great Northern Railway 4-4-2 tank locomotives (LNER Class C12)|the LNER Class C2 (ex-GNR small boiler class C1 "Klondyke" locomotives|GNR Class C1 (small boiler)}}

{{Infobox locomotive

| name = Great Northern Railway C2 class
London & North Eastern Railway C12

| powertype = Steam

| image = 67356 at Kings Lynn.jpg

| caption = 67356 at Kings Lynn, 1957

| designer = Henry Ivatt

| builder = Doncaster Works

| serialnumber = 755–758, 788–971, 796–797, 812–821, 832–841, 924–933, 1017–1026, 1155–1164

| builddate = 1898–1907

| whytetype = 4-4-2T

| gauge = {{track gauge|ussg}}

| totalproduction = 60

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

| driverdiameter = {{convert|5|ft|8|in|m|3|abbr=on}}

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

| locoweight = {{convert|62.30|LT}}

| fueltype = Coal

| fuelcap = {{convert|2.50|LT}}

| watercap = {{convert|1350|impgal}}

| boilerpressure = {{convert|170|-|175|psi|MPa|2|abbr=on}}

| cylindercount = Two, inside

| cylindersize = {{convert|18|x|26|in|mm|0|abbr=on}}

| valvegear = Stephenson

| valvetype = Slide valves

| tractiveeffort = {{convert|17900|-|18425|lbf|kN|1|abbr=on}}

| operator = {{unbulleted list|Great Northern Railway| → London & North Eastern Railway| → British Railways}}

| numinclass = 1 January 1923: 60,
1 January 1948: 49

| fleetnumbers = GNR: 1009A, 1010, 1013–1020, 1501–1550

| withdrawndate = 1957–1958

| disposition = All scrapped

}}

The Great Northern Railway class C2 locomotives is a scrapped class of 4-4-2 tank locomotives built by the Great Northern Railway (GNR) between 1898 and 1907. They were used on local and commuter passenger trains in Yorkshire and North London. They were withdrawn between 1957 and 1958.