Peđa Grbin (born 24 May 1979) is a Croatian lawyer and politician serving as President of the Social Democratic Party since 2020. He was also Leader of the Opposition from 2020 until 2022, when he was replaced by Davorko Vidović, the leader of the newly-established Social Democrats. He has represented VIII electoral district in the Croatian Parliament since 2011. He also served as the Chairman of the Parliament's Committee on the Constitution, Standing Orders and Political System from 2012 until 2015. He was vice president of the SDP from 2016 to 2018 when he was suspended from that position.