Warragai Creek is a locality in the Clarence Valley, between the towns of Casino and Grafton on the Summerland Way, in the northern-eastern region of New South Wales, Australia. According to the 2021 census, Warragai Creek had a population of 84 people.

The North Coast railway passes through the area, with the now-closed Warragai Creek station opened in 1905, and the Kyarran Loop open from 1926 to 1975.

The Warragai Creek Nature Reserve was created in 1999 and is located 17km north-east of Grafton, covering 186ha. The reserve protects several threatened flora species, including the weeping paperbark (Melaleuca irbyana) and native milkwort (Polygala linariifolia), and several fauna species, including koalas and the rufous bettong.

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