PegasusManufacturer Orbital Sciences CorporationFirst flight April 5, 1990 
PegasusManufacturer Northrop Grumman Space SystemsFirst flight April 5, 1990 
Pencil RocketCountry of origin JapanType rocket 
PetrelType sounding rocket 
Polar Satellite Launch VehicleManufacturer Indian Space Research OrganisationCountry of origin India Polar Satellite Launch Vehicle-CAManufacturer Indian Space Research OrganisationCountry of origin India 
PolyotManufacturer S.P. Korolev Rocket and Space Corporation EnergiaCountry of origin Soviet Union 
ProtonManufacturer Khrunichev State Research and Production Space CenterCountry of origin Soviet Union 
Proton-KManufacturer Khrunichev State Research and Production Space CenterCountry of origin Russia 
Proton-MManufacturer Khrunichev State Research and Production Space CenterFirst flight May 5, 2005 
PtichkaCountry of origin Soviet UnionType abandoned entity