Northern Line

Llinell ar Reilffordd Danddaearol Llundain yw'r Northern Line a ddangosir gan linell ddu ar fap y Tiwb. Agorodd y llinell hon rhwng Stockwell a Borough ym 1890, a dyma'r rhan hynaf o diwb lefel-ddofn y rhwydwaith.

 Gorsafoedd 
 High Barnet
 Totteridge & Whetstone
 Woodside Park
 West Finchley
 Mill Hill East (trên gwennol i ac o Finchley Central)
 Finchley Central
 East Finchley
 Highgate
 Archway
 Tufnell Park
 Kentish Town
 Edgware
 Burnt Oak
 Colindale
 Hendon Central
 Golders Green
 Hampstead
 Belsize Park
 Chalk Farm
 Camden Town
 Mornington Crescent
 Euston
 Warren Street
 Goodge Street
 Leicester Square
 Charing Cross
 Embankment
 Waterloo
 King's Cross St. Pancras
 Angel
 Old Street
 Moorgate
 Bank
 London Bridge
 Borough
 Elephant & Castle
 Kennington
 Oval
 Stockwell
 Clapham North
 Clapham Common
 Clapham South
 Balam
 Tooting Bec
 Tooting Broadway
 Colliers Wood
 South Wimbledon
 Morden

Map
400px|center|bawd|Llwybr daearyddol gywir y Northern Line

Northern