WTP
- Besix Watpac
- K.T.S.E.
- Preamble to the United States Constitution
- Recovery (Eminem album)
- Warsaw Public Transport Authority
- Water treatment plant
- We the People (disambiguation)
- Web Tools Platform
- Western Treatment Plant
- Will to power
- Willingness to pay
- Winnie-the-Pooh
- Wireless transaction protocol
- Women's Torah Project