The twelve noble tribes of Croatia (Latin: nobiles duodecim generationum regni Croatie), also known as twelve noble families of Croatia, was a medieval institution of nobility, alliance, or narrow noble community in the Kingdom of Croatia, which can be traced back at least to the 14th century, while the first mention of the institution was in the Pacta conventa document, which is supposedly a later copy of the original from 1102. Regardless of possible earlier references, the first verifiable mention dates from 1350, while the last from 1459. It is considered that by socio-economic power it was composed of lower and middle nobility, which had a privilege of retain and use of heirdom, tax exemption, and limited military obligations to the king. The twelve tribes are Čudomirić, Gusić, Kačić, Kukar, Jamomet, Lasničić, Lapčan and Karinjan, Mogorović, Poletčić, Snačić, Šubić, and Tugomirić.
