PHX may refer to:

• A common abbreviation for the U.S. city of Phoenix, Arizona
  • Phoenix Suns, the city's National Basketball Association team
  • Phoenix Sky Harbor International Airport (IATA Airport Code PHX), the city's primary airport
• pH(x), water pipe brand

• Movement for Democracy and Progress (Niger)
• Movement for Democracy in Africa
• Movement for Democratic Change (1999-2005)
• Movement for Democratic Change Alliance
• Movement for Democratic Change - Ncube
• Movement for Democratic Change (prior to 2005)
• Movement for Democratic Change - Zimbabwe
• Movement for Democratic Change – Zimbabwe
• Movement for Dignity and Citizenship
• Movement for Dignity and Independence
• Movement for Economic Change
• Movement for Freedom - European Georgia
• Movement for Hazara province
• Movement for Justice and Development
• Movement for Justice and the Rehabilitation of Niger
• Movement for Liberation of Iran
• Movement for Liberty - European Georgia
• Movement for Life Security
• Movement for National Alliance
• Movement for National Development (Albania)
• Movement for National Rectification-Unionist
• Movement for National Rectification–Unionist
• Movement for National Renewal (Gabon)
• Movement for peace
• Movement for Peace