He studied at the Polytechnical Institute from 1981-1986. He is a graduate of the Georgian State Institute of Cinema and Theatre (1996) and The New York Film Academy at Universal Studios in Hollywood (2006). A stage actor at the State Theatre, he also directed plays for children and ran an advertising agency. The writer of a television program entitled Georgian Bulletin for a broadcaster in New York. He has directed a number of poignantly elegant shorts, most notably Eye Level (New York Film Academy Scholarship Award at Berlinale 2005, Special Prize of International Jury at Odense FF) and The Trolley (Special Prize of international jury at Kiev "Molodist" FF). His big-screen directorial debut The Other Bank (2009) was screened at more than 100 IFFs in more than 50 countries and won about 50 prizes. Ovashvili’s second long feature - Corn Island (2014) has received Grand Prix - Crystal Globe at the Karlovy Vary IFF. Corn Island has been shortlisted among the 9 best films for 2015 year’s Oscar nomination in the Best Foreign Language Film category. For this moment the film was screened at more than 70 IFFs in different countries of the world and won 33 prizes.
The Very Short Story (short, 1993), The Trolley (short, 1996), The Mirage (short, 2000), Eye Level (short, 2003), Serenade of Sunny Country (short, 2004), Connection (short, 2005), The Other Bank (2009), Corn Island (2014), Khibula (2017), Beautiful Helen (2022).