PPN may refer to: * Guillermo León Valencia Airport *

Pre-Pottery Neolithic The Pre-Pottery Neolithic (PPN) represents the early Neolithic in the Near East, dating to years ago, (10000 – 6500 BCE).Richard, Suzanne ''Near Eastern archaeology'' Eisenbrauns; illustrated edition (1 Aug 2004) p.24/ref> It succeeds the ...

Nigerien Progressive Party-African Democratic Rally The demographic features of Nigeriens, the people of Niger, consist of population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population. The largest ethnic groups ...

(''Parti Progressiste Nigérien'') * Pingat Pangkuan Negara, a Malaysian honour *

Pedunculopontine nucleus The pedunculopontine nucleus (PPN) or pedunculopontine tegmental nucleus (PPT or PPTg) is a collection of neurons located in the upper pons in the brainstem. It is involved in voluntary movements, arousal, and provides sensory feedback to the cere ...

* Principal protected note, an investment contract *

Protoplanetary nebula A protoplanetary nebula or preplanetary nebula (PPN, plural PPNe) is an astronomical object which is at the short-lived episode during a star's rapid evolution between the late asymptotic giant branch (LAGB) phase and the subsequent planetary ne ...

Parameterized post-Newtonian formalism In physics, precisely in the study of the theory of general relativity and many alternatives to it, the post-Newtonian formalism is a calculational tool that expresses Einstein's (nonlinear) equations of gravity in terms of the lowest-order de ...

, for calculations on gravity * Pacific Patriot Network

See also