According to the Irish Mirror , Dana Kavanagh is taking her case for damages and loss of earnings to Dublin's High Court.
Her husband, 38-year-old Geoff Keating, is the multi-millionaire singer's former chief minder, who headed security for the chart-topper's Diamonds World Tour in 2013.
Mr Keating, a dad of four from Dublin, told the newspaper: "You wouldn't believe half of it, unless I showed you. It's crazy stuff. She was like part of the family."
The Barbados-born star, who was not available for comment last night, will be represented by legal firm Matheson. She is not expected to attend court.
The case comes three years after Mr Keating brought a defamation suit against the Umbrella singer, but that action was dramatically dropped in 2015.
He said the allegations had caused significant and substantial damage to his family life, reputation and business, causing him distress and anxiety.
It was claimed Mr Keating was working for Rihanna and had accompanied her on tour to Germany, but returned home after being unjustly dismissed.
When Mr Keating's case came before the High Court, his lawyers secured permission from Mr Justice Michael Peart to serve notice of the intended proceedings on Robyn Fenty - aka Rihanna - at her address in New York.