Titnore Wood is an area of ancient woodland to the north-west of Worthing in West Sussex. With neighbouring Goring Wood it forms one of the last remaining blocks of ancient woodland on the West Sussex coastal plain.
Since 2006 land in and around the wood has been the site of a proposed major urban extension to the Worthing suburb of West Durrington. The proposed development has prompted environmental protestors to tree-sit within the wood since May 2006. Since then Worthing Borough Council has agreed to a substantial new housing development just to the east of the woods themselves, as an extension of Durrington. This includes a new school, doctors surgery and around 2000 new houses on agricultural land. Though the ancient woodland itself would not be destroyed because of this, the large increase in people will inevitably lead to the degradation of the forest due to fly-tipping and other unsavoury activities, such as drug use, which is in much evidence in the pockets of woodland remaining in Durrington itself.