Helena Beata Maria af Sandeberg (born 1 September 1971, in Solna) is a Swedish actress.
From 2005 to 2010, she was married to the director Alexander Mørk-Eidem with whom she had a son, Alfred. In 2013, she married the actor and musician Fredrik Lycke and in 2014 their daughter was born. They divorced in 2017. She owns the production company Alfredo Film och teater AB.
Helena af Sandeberg was born on 1 September 1971 in Solna, Stockholm County, Sweden and grew up in Rotebro, Stockholm County, Sweden. She studied at Södra Latin in Stockholm and Actors Studio in New York. The af Sandeberg family is part of the Swedish untitled nobility.