The Gotini (in Tacitus), who are generally equated to the Cotini in other sources, were a Gaulish tribe living during Roman times in the mountains approximately near the modern borders of the Czech Republic and Slovakia.
The spelling "Gotini" is only known from one classical source, the De Origine et situ Germanorum of Tacitus. Tacitus clearly distinguishes the Gotini from the similarly named Gotones, who he discussed in the immediately following passage.
Tacitus described the Gotini as speaking a Gaulish language and working, to their degradation, in mining. Like their neighbours in the mountains, the Osi, they had to pay tribute to both the neighbouring Quadi and Sarmatians. Although the Gotoni lived in the midst of Suevic peoples, they were not Germanic.
They probably lived in the area of modern western Slovakia, Moravia, and Silesia. They may have constituted all or part of the archaeological Púchov culture, with its center in Púchov.
It has also been suggested that the same people are reported by Claudius Ptolemy as the Κῶγνοι. Ptolemy places them south of the Sidones, south of the Askiburgi mountains (probably the modern Sudeten mountains) but north of Hercynian valley. So as in Tacitus, they are situated near the Buri and north of the Quadi.