PCNS may refer to:

• Peralta College for Non-Traditional Study, former name of Berkeley City College
• Progressive Conservative Association of Nova Scotia
• Microsoft Password Change Notification Service

• Valentina Ciurina
• Valentina Cámara
• Valentin Adama Diomande
• Valentina Diaz
• Valentina Diaz (Devious Maids)
• Valentina Dimitrova (athlete)
• Valentina (drag queen)
• Valentina D'Urbano
• Valentina Durán Medina
• Valentina Díaz
• Valentina Evert
• Valentina Favazza
• Valentina Galiano
• Valentina Gardellin
• Valentina Golenkova
• Valentina Gorinevskaya
• Valentina Gustin
• Valentina Herszage
• Valentina Holenkova
• Valentina Ivanov
• Valentina Ivanovna Safronova
• Valentina Ivashova
• Valentina Jaksjina
• Valentina Kamsouleva
• Valentina Kamsulyeva