Kondratiev

Kondratiev, Kondratyev or Kondratieff (Кондратьев) is a Slavic surname (feminine form: Kondratieva or Kondratyeva, Кондратьева) derived from the given name Kondraty. People of this name include:
 * Adelina Kondrátieva (1917–2012), Argentine-born Russian translator and Brigadista
 * Alexei Kondratiev (1949–2010), American scholar specializing in Celtic languages and cultures
 * Dmitri Kondratyev (born 1969), cosmonaut
 * Georgi Kondratiev (born 1960), footballer
 * Georgy Mihailovich Kondratiev (1887–1958), Russian physicist
 * Ivan Kondratyev (1849–1904), Russian poet and writer
 * Kirill Kondratyev (1920–2006), Russian atmospheric physicist
 * Lyudmila Kondratyeva (born 1958), Russian sprinter and 1980 Olympic champion
 * Maria Kondratieva (born 1982), Russian tennis player
 * Maxim Kondratyev (born 1983), Russian ice-hockey player
 * Nataliya Kondratyeva (born 1986), Russian judoka
 * Nikolai Kondratiev (1892–1938), Russian economist who researched Kondratiev waves
 * Oksana Kondratyeva (born 1985), Russian hammer thrower, daughter of Lyudmila
 * Sergei Kondratyev
 * Veniamin Kondratyev (born 1970), governor of Krasnodar Krai
 * Vladyslav Kondratyev (born 1990), Ukrainian basketball player
 * Yekaterina Kondratyeva (born 1982), Russian sprinter
 * Yuri Kondratiev (born 1953), Ukrainian mathematician