The Faculty of Science operates several unique off-campus field-stations, from the tropics to the high arctic.
- Bellairs Research Institute, located in Barbados, is Canada's only teaching and research facility in the tropics.
- The Gault Nature Reserve, situated on Mont St. Hilaire just 40km from Montreal, protects the largest remaining remnant of the primeval forests of the St. Lawrence River Valley. The mountain and its surroundings are a UNESCO Biosphere Reserve.
- The Wilder and Helen Penfield Nature Conservancy features a laboratory for aquatic studies located lakeside on Lake Memphremagog, 100 km southeast of Montreal. Streams, rivers and over thirty nearby lakes and ponds offer a wide range of study sites. Research projects range from heavy metal loading to microbial growth rates and fish yields.
- The McGill Sub-Arctic Research Station in Schefferville, Quebec, near the Labrador border, offers summer and winter access to a vast lichen woodland and alpine tundra.
- The McGill Arctic Research Station (MARS) is one of the longest-operating seasonal field research facilities in the high Arctic and has the longest continuous mass balance record for any high Arctic glacier.