Bognor proved too strong for Chichester Priory Park when the sides met at the Regis Oval.
Three wickets apiece for Josh Sargent, Marquino Mindley and Scott Bingham saw Priory bowled out for 110, Matt Bennison top-scoring with 32.
Rob Willway with 40 not out led the reply as Bognor got home with five wickets in hand, with Matt Geffen's three for 15 impressive but not enough to prevent defeat.
Bognor are now out of the bottom two and are not too far behind mid-table Chi Priory Park.
See the best of the action in Kate Shemilt's picture slideshow, above, and get all the local cricket action and latest tables in the Observer, every Thursday.