Poretsky ({{lang-ru|Порецкий}}; masculine), Poretskaya ({{lang|ru|Порецкая}}; feminine), or Poretskoye ({{lang|ru|Порецкое}}; neuter) is the name of several rural localities in Russia:

• Poretskoye, Chuvash Republic, a selo in Poretskoye Rural Settlement of Poretsky District in the Chuvash Republic
• Poretskoye, Nizhny Novgorod Oblast, a village in Novomirsky Selsoviet of Vadsky District in Nizhny Novgorod Oblast
• Poretskoye, Penza Oblast, a village in Tsarevshchinsky Selsoviet of Mokshansky District in Penza Oblast
• Poretskoye, Ulyanovsk Oblast, a selo in Speshnevsky Rural Okrug of Kuzovatovsky District in Ulyanovsk Oblast
• Poretskoye, Vladimir Oblast, a selo in Suzdalsky District of Vladimir Oblast

• Zeta Corse
• Zeta Corvi
• Zeta Crateris
• Zeta (crown land)
• Zeta-cypermethrin
• Zeta Delphini
• Zeta Delta Xi
• Zeta Eridani
• Zeta function
• Zeta-function of an elliptic operator
• Zeta function of an operator
• Zeta (genus)
• Zeta (Greek)
• Zeta (greek letter)
• Zeta Gruis
• Zetagyne
• Zeta Horologii
• Zeta Hydri
• Zeta Indi
• Zeta Interactive
• Zeta Interactive Corporation
• Zeta lep
• Zeta Lupi
• Zeta Lyrae
• Zeta Lyrae (disambiguation)