Kseniya Aleksandrovna Aksyonova (neé Ustalova) (Russian: Ксения Александровна Аксенова; born January 14, 1988 in Sverdlovsk) is a Russian track and field sprinter who specialises in the 400 metres.
She has won gold medals in the 4 × 400 metres relay with Russia in European competition in the junior (2007), under-23 (2009) and senior (2010) levels. She won the silver medal in the individual 400 m at the 2010 European Athletics Championships with a personal best run of 49.92 seconds. She won the relay gold at the 2011 Summer Universiade and won her first global level medal with a relay bronze at the 2012 IAAF World Indoor Championships.
Ustalova began 2013 with an indoor best 51.31 seconds to win the Russian indoor title.
- 1969: Great Britain (Stirling, Lowe, Simpson, Board)
- 1971: East Germany (Kühne, Lohse, Seidler, Zehrt)
- 1974: East Germany (Rohde, Dietsch, Handt, Streidt)
- 1978: East Germany (Marquardt, Krug, Brehmer, Koch)
- 1982: East Germany (Siemon, Busch, Rübsam, Koch)
- 1986: East Germany
- 1990: East Germany (Derr, Hesselbarth, Müller, Breuer)
- 1994: France (Landre, Elien, Dorsile, Pérec)
- 1998: Germany (Feller, Rohländer, Rieger, Breuer)
- 2002: Germany (Ekpo-Umoh, Rockmeier, Marx, Breuer)
- 2006: Russia (Pospelova, Ivanova, Zaytseva, Veshkurova)
- 2010: Russia (Firova, Kapachinskaya, Krivoshapka, Ustalova)
- 2012: Ukraine (Olishevska, Zemlyak, Pyhyda, Lohvynenko)
- 2014: France (Gayot, Hurtis, Raharolahy, Gueï)