Mark Wood FRGS (born 1966), is a British explorer, professional speaker, expedition leader, and author. He served in the British Army in the Second Battalion, Royal Regiment of Fusiliers, and as a firefighter in the Royal Berkshire Fire and Rescue Service. He subsequently became an explorer, and expedition leader where he has trained and led teams for major Polar and mountain expeditions in extreme environments such as the Arctic Circle, the Himalayas, Antarctica, Alaska, and the Canadian and Norwegian High Arctic to raise awareness of climate change and creates very large virtual classrooms to talk to schools and children about these issues.