Narrikup is a small town and locality of the Shire of Plantagenet in the Great Southern region of Western Australia. Narrikup is located between Albany and Mount Barker. At the 2006 census, Narrikup had a population of 515.

The name Narrikup comes from the Aboriginal name of a nearby brook which is thought to mean "place of abundance".

The area was visited by Thomas Wilson who travelled from Albany in 1829 when he camped on the banks of the stream west of the current townsite.

The town is located on the Great Southern Railway line which was completed in this area in 1889, although initially the siding was named Hay River.

A reserve for the townsite was put aside in 1901 and in 1905 20 lots were surveyed; the townsite was finally gazetted in 1907.

A number of named and unnamed nature reserves are located within Narrikup, all located within the Jarrah Forest bioregion:

• Chorkerup Nature Reserve was gazetted on 26 August 2004 and has a size of 0.48 square kilometres (0.19 sq mi)
• Lake Barnes Road Nature Reserve was gazetted on 22 January 1912 and has a size of 2.98 square kilometres (1.15 sq mi)
• Lake Eyrie Nature Reserve was gazetted on 15 July 1898 and has a size of 0.4 square kilometres (0.15 sq mi)
• Sleeman Creek Nature Reserve was gazetted on 3 October 1924 and has a size of 4.16 square kilometres (1.61 sq mi)
• WA49722 Nature Reserve was gazetted on 2 December 2008 and has a size of 0.9 square kilometres (0.35 sq mi)
• WA15775 Nature Reserve was gazetted on 27 November 1914 and has a size of 0.61 square kilometres (0.24 sq mi)