- w:Protestant_Reformed_Church, Protestant Reformed Church
- w:Pesticide Residue, Pesticide Residues Committee
- People's Republic of China
- Palm Resource Code, the file format for w:Palm OS, Palm OS applications.
- Planning Review Committee
- Protocol Review Committee
- Preschool Referral Committee
- Private Commercial Organisation
- Personal radio communications, eg the w:AN/PRC-77, PRC-77 portable secure FM radio set.
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