Ekaterina Alekseyevna Semenikhin (Russian: Екатерина Алексеевна Семенихина; born 4 December 1971) is a Russian art collector, philanthropist, economist and honorary consul.

[1] Semenikhin is the co-founder of the Ekaterina Cultural Foundation and the Honorary Consul of Russia in the Principality of Monaco.

As of the early 2000s, Semenikhin, with her husband Vladimir Semenikhin, has co-founded a foundation to promote the arts in Russia and has, through it, supported exhibitions at State museums and galleries.

[5] Semenikhin has encouraged the development of the arts in Russia by hosting exhibitions of Russian painters from the avant-garde movement.

[6] Semenikhin has been, since 13 June 2014, the General Honorary Consul of Russia in the Principality of Monaco.