The present work studied the mosquito's identification, distribution and densities in fourteen Egyptian Governorates. The abundance and distribution of mosquito species monitored by three phases. The first was carried out in 1999 in five governorates, Qalyobia, Menoufia, Behaira, Fayium and Assuit. The second was in the year 2000 in Kafr El Sheikh, Giza, Sharkia, Menia and Aswan. The third was in the year 2001 in Kena, El Wady El Gadeed, Dakahlia and South Sinai. Culex species were the commonest mainly C. pipiens, C. antennatus and C. univittatus. C. thelerei was found only in El Kharga Oasis. Culiseta sp. was found in Qalyobia, Menofia, Behaira, Fayium, El Wady El Gadeed, Dakahlia and South Sinai and as larvae in Kafr El Sheikh, Giza, and Menia. Aedes detritus was found in Assiut, Fayium, Giza, Aswan, El Wady El Gadeed and South Sinai. Ae. caspius was found in Assiut and Aswan and as larvae in Kena and El Wady El Gadeed. Anopheles pharoensis was found in Behaira and Fayium, while A. algeriensis in Aswan. A. multicolor and A. sergentii were found in Fayium, Aswan and El Wady El Gadeed; but in Kena A. sergentii was found as larvae and A. multicolor as adults.