WPK could refer to:
- Workers' Party of Korea, ruling party of North Korea
- Wells Fargo Capital VII, a stock on the New York Stock Exchange
- Winpak, a stock on the Toronto Stock Exchange
- Wider peacekeeping
- Winter Park (Amtrak station), Florida, United States; Amtrak Station Code WPK
- Wertpapierkennummer, a German securities identification code
- Workers' Party of Kampuchea, an earlier name for the Khmer Rouge
- Wiener Privatklinik, a private hospital in Vienna