[1] Twin sisters Tatyana and Olga were born in Kaliningrad, Russian SFSR, Soviet Union in a family of actors of the Kaliningrad Regional Drama Theater: Honored Artist of the RF Albert Arntgolts and actress Valentina Arntgolts (née Galich).

Tatyana Arntgolts, who was born 20 minutes before Olga, is also an actress.

Superfinal together with figure skater Maxim Staviski, where she replaced her sister Tatyana, who had to stop participating in the project due to pregnancy.

[4] In summer 2009, Arntgolts married actor Vakhtang Beridze.

[10] In 2016, it became known that Arntgolts was pregnant for the second time with director Dmitry Petrun,[11] with whom she began a relationship on the set of the television series Officers' Wives (2015); at that time the actress was still married.