Jalbarragup is a rural locality of the Shire of Nannup in the South West region of Western Australia.

The Brockman Highway and the Blackwood River run through the locality from north-east to south-west.

The eastern-most section of the Wiltshire-Butler National Park stretches into the west of Jalbarragup, as does a small northern section of the Milyeannup National Park at the southern boundary of the locality.

[4] The site of the state heritage listed Jalbarragup Bridge lies within the locality.

The wooden bridge was constructed in 1900 and in use until 1988, and was the last of its kind in use on the Blackwood River.