- Waterloo Road
- Wellfield Road
- Wells Close
- Wells Close (1)
- Wells Close (2)
- Wellwood
- Wellwood (1)
- Wellwood (2)
- Wentloog Business Park
- Wentloog Corporate Park
- Wentloog Rd
- Wentloog Rd (1)
- Wentworth Close
- Wentworth Close (1)
- Werfa Street
- Wern Fawr Lane
- Wern Goch
- Wern Goch (1)
- Wern Goch (2)
- Wern Goch East
- Wern Goch East (1)
- West Grove
- West Grove (1)
- West Grove (2)
- West Grove 2
- West Grove 3
- West Grove 4
- West Grove 4 (1)
- West Grove 5
- Westgate Street (Kg)
- Westgate Street KG
- Westgate Street KH
- Westgate Street KL
- Westgate Street KM
- Westgate Street KN
- Westgate Street KP
- Westgate Street Km
- Westminster Crescent
- Westminster Drive
- Westminster Drive (1)
- Whitaker Road
- Wild Gardens Rd
- Wild Gardens Rd (1)
- Willowbrook Drive
- Willowbrook Drive (1)
- Willowbrook School
- Willowdene Way
- Willows Avenue
- Willows Avenue (1)
- Willows Avenue (2)
- Windsor Arcade
- Windsor Terrace
- Windsor Terrace (1)
- Witla Court
- Witla Court (1)
- Wood Street JA
- Wood Street JR
- Wood Street Ja
- Wood Street Ja (1)
- Woodside Court
- Woodville Road
- Woodville Road (1)
- Woolaston Ave
- Woolaston Ave (1)
- Worle Avenue
- Worle Avenue (1)
- Wyevale Garden Centre
- Wyevale Garden Centre (1)
- Wyndham Arcade Je
- Wyndham Arcade Jj
- Wyndham Arcade Stop JE
- Wyndham Arcade Stop Je
- Youghal Close
- Youghal Close (1)
- Youghal Close (2)
- Ysgol Bro Edern
- Ysgol Bro Edern (1)
- Ysgol Gyfun Gwent Is Coed
- Ysgol Gyfun Gwent Iscoed
- Ystrad Street