Para-Nordic skiing classification is the classification system for para-Nordic skiing which includes the biathlon and cross-country events. The classifications for Para-Nordic skiing mirrors the classifications for Para-Alpine skiing with some exceptions. A functional mobility and medical classification is in use, with skiers being divided into three groups: standing skiers, sit skiers and visually impaired skiers. International classification is governed by International Paralympic Committee, Nordic Skiing (IPC-NS). Other classification is handled by national bodies. Before the IPC-NS took over classification, a number of organizations handled classification based on the type of disability.
The first classification system for the sport was developed in Scandinavia and was a medical system for skiers with amputations. At the time, other types of disability were not eligible for classification. In developing a system for use at the first Winter Paralympics, organisers wanted to get away from a medical classification system and use a functional system, but they ended up with a system based on equipment utilised by the skier instead. As the 1970s progressed, equipment improvements made it possible for skiers with spinal cord injuries to participate and a classification system developed for these skiers. By the 1990s, there were over ten Nordic skiing classes and a percentage system was developed to allow skiers with different disabilities inside one of three groups to compete against each other. The skiers time at the end of the race would be multiplied against a percentage to determine a time that allowed for fair cross classification comparisons. While the actual percentages change from time to time, this system to calculate a winner is still in use. Despite repeated efforts to move to a true functional mobility based classification dating back to the 1970s, medical assessment still took place during the classification process in the 2010s.
There are different events and equipment for different Para-Nordic skiing classes. For sit-skiers, they use sit-skis with two skis, unlike Para-Alpine Skiing where sit skiers use one ski. Blind skiers use a guide, with the position of the guide relative to the skier depending on the class of the skier. In the United States, Para-Nordic skiing has events for people with intellectual disability that are run through Special Olympics. The classification process for blind Para-Nordic skiing is handled internationally by the International Blind Sports Association and is a medical assessment. While National Paralympic Committees can classify their skiers for national competitions, this classification is subject to change at international competitions. These classifications have been used at the Winter Paralympics. Intellectual disability skiers were allowed to compete in full medal events at the 1998 Winter Paralympics but were subsequently removed because of cheating problems at the 2000 Summer Olympics.