Voina began his coaching career with
Steaua, he led them to nine
national championships and one
EHF Champions League final. He then led Romania to a bronze medal at the
1984 Summer Olympics in Los Angeles. He has coached among others French sides ASL Robertsau,
Sélestat Alsace, RC
Strasbourg, and the Romanian national men's handball team (twice), and the Romanian national women's handball team. Between February 2009 and May 2010 he was also the head coach of
CS Oltchim Râmnicu Vâlcea. In the 2009–2010 season, he managed to qualify his team
CS Oltchim Râmnicu Vâlcea in the
Women's EHF Champions League Final for the first time in the history of the club. Unfortunately his side lost to
Viborg HK. Voina coached the
Romanian national team to a third-place finish in the
2010 European Women's Handball Championship. At the end of the season, Radu Voina decided to take a break so he didn't renew his expired contract with
CS Oltchim Râmnicu Vâlcea, but he remained the coach of
Romania. In March 2011, he replaced
Anja Andersen on the bench of the
Romanian team
CS Oltchim Râmnicu Vâlcea. His contracts with both
Romania and
Oltchim expired in June 2012 and Voina decided not to renew them. ==Distinctions==