Gmina Pacyna is a rural gmina (administrative district) in Gostynin County, Masovian Voivodeship, in east-central Poland. Its seat is the village of Pacyna, which lies approximately south-east of Gostynin and west of Warsaw.
The gmina covers an area of and in 2017 its total population was 3614. According to data from 2009 84% of the area is agricultural land.
Gmina Pacyna contains the villages and settlements of Anatolin, Janówek, à Âuszczanówek, Luszyn, Model, Pacyna, Podatkówek, Podczachy, Przylaski, Radycza, Raków, Rakowiec, Remki, Robertów, Romanów, Rybie, Sejkowice, Skrzeszewy, Sà Âomków and Wola Pacyà Âska.
Gmina Pacyna is bordered by the gminas of Gàbin, Kiernozia, Oporów, Sanniki, Szczawin Koà Âcielny and à »ychlin.