The Waimate Branch was a branch line railway built in southern Canterbury, New Zealand to link the Main South Line with the town of Waimate, the centre of the surrounding rural area. It opened in 1877 and operated until 1966; for some of this time, it included an extension to Waihao Downs that was known as the Waimate Gorge Branch or Waihao Downs Branch. When the line closed, Waimate received the dubious distinction of being New Zealand's first major town to lose its railway line.