The model has also named her ex-manager Claire Powell, CAN Associates Ltd and former friend Jamelah Asmar in papers filed at the High Court.
Price alleges that Andre had misused personal information about her, reports The Mirror.
She is reportedly also seeking an injunction against the lawsuit and information used about her.
"Katie has been trying to reach an agreement but it hasn't happened amicably, so she has gone to the courts instead," a source said.
"She's frustrated, but she hopes that they can all reconcile their problems soon."
Peter Andre had previously sued Katie Price for defamation. She later agreed to pay an undisclosed amount and publicly apologised for public interviews about him.
Katie Price divorced second husband Alex Reid after 14 months earlier this week (March 20).
She confirmed yesterday (March 23) that she has got back together with boyfriend Leandro Penna.
> Katie Price's disgruntled fan jumps on Range Rover bonnet - pictures