Oleksandra Nikolayenko-Ruffin (Ukrainian: Олександра Ніколаєнко; born 3 July 1981 in Budapest, Hungary) is a Ukrainian model and actress.
She studied at the Odessa National Law Academy, and worked for Savrox Models Agency in Odessa. She takes an active part in charitable projects. She speaks Ukrainian, Russian and English.
She holds the "Miss Odessa", "Miss Ukraine South", "Miss Ukraine", "Miss Student", "Miss Tourism-Europe", "First vice-Miss Tourism-Planet", "Miss American Dream" and "Miss Tourism International" titles. She represented Ukraine at Miss World 2001 and placed among the top ten. Later, she was the 2004 Miss Ukraine Universe winner and represented Ukraine at Miss Universe 2004 in Ecuador. She has received more beauty awards than any other woman in Ukraine. She was invited to judge the Miss Universe 2005 finals in Thailand.
She married the then-72-year-old Phil Ruffin in 2008. They have two children: Richard William Ruffin (born April 2010) and daughter Malena (born 2013). She is currently the National Director Chairman of Miss Ukraine Universe.
She also designed the "Oleksandra Spa & Salon" at the Treasure Island Hotel and Casino in Paradise, which is owned by her husband.