Alp may refer to:

• alp, a high mountain, especially of the Alps
• alp, an obsolete word for elephant
• alp (bullfinch), a type of bird
• Alp (Alip), a Turkish honorific
  • Alp, a popular Turkish boy's name
  • Alp Arslan
• Alp, a nightmare creature originating from Teutonic or German folklore
• Alp, Spain, a village
• Alp 2500, a ski resort in Spain
• alpine pasture

Aluminium phosphide (P) is an inorganic compound used as a wide band gap semiconductor and a fumigant. This colourless solid is generally sold as a grey-green-yellow powder due to the presence of impurities arising from hydrolysis and oxidation.

The Australian Labor Party (also ALP and Labor, was Labour before 1912) is an Australian political party. It has been the governing party of the Commonwealth of Australia since the 2007 federal election. Julia Gillard is the party's federal parliamentary leader and Prime Minister of Australia. In the state and territory parliaments, Labor governs in South Australia, Tasmania, the Australian Capital Territory and the Northern Territory. The party competes against the Liberal/National Coalition for political office at the federal and state (and sometimes local) level.