Kondratiev, Kondratyev or Kondratieff (Russian: Кондратьев) is a Slavic surname (feminine form: Kondratieva or Kondratyeva, Russian: Кондратьева). People of this name include:
Alexei Kondratiev (1949–2010), American scholar specialising in Celtic languages and cultures
Dmitri Kondratyev, cosmonaut
Georgi Kondratyev, footballer
Kirill Kondratyev (footballer)
Kirill Y. Kondratyev (physicist) (1920–2006), Russian atmospheric physicist
Ivan Kondratyev (? – 1904) Russian poet and writer
Maxim Kondratiev (born 1983), Russian ice-hockey player
Nikolai Kondratiev (1892–1938), Russian economist who researched Kondratiev waves
Lyudmila Kondratyeva (born 1958), Russian sprinter and 1980 Olympic champion
Maria Kondratieva (born 1982), Russian tennis player
Nataliya Kondratyeva (born 1986), Russian judoka
Oksana Kondratyeva (born 1985), Russian hammer thrower, daughter of Lyudmila
Yekaterina Kondratyeva (born 1982), Russian sprinter
