Lierne is most famous for the bears. Though the bear stock in Lierne is low compared to e.q. the bear stock in Sweden, it is a problem for the sheep farmers.
In the period 1915-1964 Lierne was dividet in two municipalities, Nordli and Sørli.
The cross-country race Flyktingerennet is arranged every year. It's a race following the barway of the runaways who escaped from Norway to Sweden during the World War 2.