Poludenovka ({{lang-ru|Полуденовка}}) is the name of several rural localities in Russia:

• Poludenovka, Moscow Oblast, a village in Tempovoye Rural Settlement of Taldomsky District of Moscow Oblast
• Poludenovka, Tomsk Oblast, a village in Verkhneketsky District of Tomsk Oblast

• Roman Catholic Diocese of Crema
• Roman Catholic Diocese of Cremona
• Roman Catholic Diocese of Crookston
• Roman Catholic Diocese of Cruz del Eje
• Roman Catholic Diocese of Cuauhtémoc-Madera
• Roman Catholic Diocese of Cuautitlán
• Roman Catholic Diocese of Cuernavaca
• Roman Catholic Diocese of Cuidad Valles
• Roman Catholic Diocese of Cuidad Victoria
• Roman Catholic Diocese of Culiacán
• Roman Catholic Diocese of Cumania
• Roman Catholic Diocese of Cuneo
• Roman Catholic Diocese of Cádiz y Ceuta
• Roman Catholic Diocese of Córdoba (Mexico)
• Roman Catholic Diocese of Cần Thơ
• Roman Catholic Diocese of Dallas
• Roman Catholic Diocese of Daloa
• Roman Catholic Diocese of Damongo
• Roman Catholic Diocese of Dapaong
• Roman Catholic Diocese of Darjeeling
• Roman Catholic Diocese of Daru-Kiunga
• Roman Catholic Diocese of Darwin
• Roman Catholic Diocese of Dassa-Zoumé
• Roman Catholic Diocese of David
• Roman Catholic Diocese of Dax