The 23rd Annual Latin American Symposium presented by the American Mosquito Control Association (AMCA) was held as part of the 79th Annual Meeting in Atlantic City, NJ, in February 2013. The principal objective, as for the previous 22 symposia, was to promote participation in the AMCA by vector control specialists, public health workers, and academicians from Latin America. This publication includes summaries of 49 presentations that were given orally in Spanish or presented as posters by participants from Colombia, Mexico, and the USA. Topics addressed in the symposium included: surveillance, ecology, chemical and biological control, and insecticide resistance associated with Aedes aegypti; surveillance and control of Anopheles vectors of malaria; and studies of dengue and West Nile viruses, Chagas disease, and Lutzomyia.