Joanna Mihuà Âka-Petru formerly Joanna Schmidt (born 14 September 1978 in Gà Âogów) is a Polish manager, politician and economist. She was a member of the Sejm from 2015 to 2019, representing the Modern party. Since 2024, she is the wife (formerly, the long-term domestic partner) of the parties' founder Ryszard Petru.