Saulius Beržinis was born in 1950, Vilnius. In 1973 he graduated from Vilnius University, Philology department. In 1983 he graduated from the Moscow State Cinematography Institute, Directing Department (diploma with distinction). In 1995, 1999 and 2003 he attended co-production courses at BMC, Bornholm, Denmark.
In 1969–1978 he was the director of the Vilnius University Theatre; in 1974–1991 Beržinis worked as a scriptwriter for the Lithuanian Film Studio and Lithuanian Television; in 1979–1992 he worked as a film director for the Lithuanian Films Studio, Commercial Film Studio and Sverdlovsk Film Studio. Since 1990 he has been a film director at the film studio Kopa. In 1989–2003 Beržinis worked as an executive producer together with HCL – Videoproduction, Baltic Trajectum, BBC Production, BBC History Dept., Les Films d’Ici, Great Project Film and Cicero Films Production Distribution. In 1997–1998 he was the assistant director of the chairman of the Lithuanian National Radio and Television Council, in 1999, the chairman; In 1997–1999 he was co-ordinating the platform of Eastern and Central European Radio and Television in Lithuania; in 1997–1999 he was an observer at the permanent committee for the TV without Walls convention at the European Council; in 1995–2002 he was the chairman of the Lithuanian Documentary Filmmakers’ Guild; in 1995–2002 he was a member of the Lithuanian Cinematographers’ Union Council; in 2001–2002, a member of the Cinema Experts Council at the Ministry of Culture of the Republic of Lithuania.