Kincumber is a south-eastern suburb of the Central Coast region of New South Wales, Australia, nested between the Kincumba Mountain Reserve and the Kincumber Broadwater and located 91 kilometres (57 mi) north of Sydney via the Sydney-Newcastle Freeway (F3). It is part of the Central Coast Council local government area.

A nature reserve, Kincumba Mountain, is located within the suburb and is often used by the community for various functions, including picnicking, bush-walking, orienteering, parties, and carnivals.

The name stems from the local Aboriginal name of "Kincumba" meaning "towards the rising sun" or "to tomorrow". A large open flat rock area at the highest plateau of Kincumba Mountain, which commands panoramic views of the region, was used by Kuringgai people as a meeting place and camp. Being the highest open position in the region, it was first to receive the morning sun as it broke over the eastern horizon Tasman Sea/Pacific Ocean, and so this area was also referred to as "towards tomorrow". Signs of habitation in the Kincumber area include axe-grinding grooves and rock engravings on Kincumba Mountain. Due to the freshwater creek, water access from Brisbane Water and the Hawkesbury River, and an abundance of old rainforest timber in the surrounding valley hills, Kincumber was one of the earliest settlements on the Central Coast, supplying wood for the needs of the growing colony at Sydney in the early 19th century.

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