Bratislava had signed first partner treaty with city of Perugia located in region Umbria in Italy on July 18, 1962. Bratislava is a partner (twin town) of the following towns/cities at this time:
Yerevan, Armenia
Vienna, Austria
Ruse, Bulgaria
Larnaka, Cyprus
Prague, Czech Republic
Alexandria, Egypt
Turku, Finland
Ulm, Germany
Bremen, Germany
Solun, Greece
Székesfehervár, Hungary
Perugia, Italy
Rotterdam, Netherlands
Kraków, Poland
Ljubljana, Slovenia
Kyiv, Ukraine
Cleveland, USA