Xoy or XOY may refer to:

• The Xoy River, in Acala Ch'ol
• Xoy Ceremony, a divination festival in the Fatick Region
• XOY, former name of the Japanese Line Webtoon channel

• Maria Pietersdr Olycan
• Maria Pietruszynska
• Maria Pietruszyńska
• Maria Pilar Fernandez
• Maria Pilar Romero
• Maria Pineda Gochi
• Maria Pinigina
• Maria Pinto (designer)
• Maria Pinto (fashion)
• Maria Pinto (fashion designer)
• Maria Pisareva
• Maria Piątkowska-Chojnacka-Ilwicka
• Maria Pogonowska
• Mariapolder, Strijen
• Mariapolder (Strijen)
• Maria Polinsky
• Mariapolis, Manitoba
• Maria Ponderus
• Maria Poole
• Maria Pope
• Maria Popistasu
• Maria Popistașu
• Maria Popova
• Maria Porges
• Maria Portela