Newcastle KB United are a defunct Australian association football club.

While they often struggled to compete at the very top of the league Newcastle were regular mid table finishers and their only honour was in 1984 when they travelled to Melbourne Knights and won the national league cup 1–0, playing as the newly formed Newcastle Rosebud United.

They were excluded from the NSL at the end of the 1986 season when it was re-organised and returned to the NNSW League.

This record was 18,367 against Sydney Olympic in April 1979, a year when their average home crowd exceeded 10,000.

The local vocal support was known as "The Rowdies" and they created a great atmosphere from deep in the heart of the Western grandstand in what was known affectionately as 'The Red Section'.