In 2017, she was counsel for several of the accusers in the metoo campaign.

In 2017 she was counself for a gang rape victim who had been raped by two 19-year-old and one 20-year-old men. All received prison sentences and while the public prosecutor had demanded two of the men be deported to their home countries, the district court ruled not to deport them. The neglection to deport was appealed by Massi Fritz.

In 2017, she was counsel for the plaintiff in a noted case of gang rape involving about a dozen men of in the Stockholm suburb of Fittja, of which five stood trial. The accused were acquitted due to the poor handling of crime scene investigation by the Swedish Police Authority, this in turn led to a protest against the Police of Sweden where 80 000 signatures were collected.

In 2015, she was noted for asking a rape suspect about his underwear during a trial, to demonstrate the absurdity of asking rape victims similar questions.

In 2007, she was counsel for the victim in a noted case involving a plastic surgeon having raped his patient during surgery while she was sedated.

In 1999 the Kurdish woman Pela Atroshi was killed by her father and her uncles because she had decided to not live by the strict norms of her family, one of the earliest widely publicised trials involving honor killings in Sweden. Massi Fritz was the counsel for the younger sister of Pela Atroshi.

Elisabeth Massi Fritz (born 24 July 1967) is a Swedish lawyer who has received recognition as counsel for an injured party for female victims of crime. She has received the Karin Söder commemoration award. She grew up in Motala in a family characterised as having a strong honor code. Massi Fritz is an advocate against honor culture and honor related crime.