Born in Bucharest, Alina trained in Kiev for seven years before joining the Royal Ballet School in 1997. Upon completion of her training, six month later, she returned to Kiev, to join the company as a principal dancer. A year later she joined the Royal Ballet Company (november 1999) and at the end of the season she was promoted to Soloist. On 17 April 2001 Sir Anthony Dowell promoted Alina to the rank of principal dancer after her performance of Giselle. Alina joined the English National Ballet in September 2013, as a Leading Principal Dancer. While a member of ENB she continues to perform as a guest artist with companies worldwide and is a permanent guest with the Hamburg Ballet. Alina has Organized Gala's in Romania and in London (Hospice of Hope) over the last few years. In February 2012 Alina premiered her «Alina Cojocaru – Dream Project», in Tokyo, Japan, which she directed and staged, while performing along side friends and colleagues from the Tokyo Ballet, Hamburg Ballet, ENB and Royal Ballet. Alina's second Dream Project took place in July 2014. And the 3rd one in February 2020. In 2015 Alina presented a charity Gala at the Lincoln Center NY. In February 2020 Alina produced «Alina at Sadlers Wells Theatre». Together with Ivan Putrov Alina produced «dance for Ukraine» on the 19th March, a gala in aid and support of the Ukraine.

At the Origen Festival she danced in the ballet «Lacuna» (2022) by Juliano Nunes.