Selected. Trained, Trusted.
A Career Built on Being Chosen for Roles Most Can Only Imagine.
ALWAYS EXPLORING
Spacewalker. Physician. Scientist. Storyteller. Leader.
Dr. Dave Williams has logged 687 hours in space, performed three spacewalks on the International Space Station, lived on the ocean floor, treated patients in emergency rooms, and led organizations of thousands. He didn't follow a single path — he blazed several, simultaneously. With each step he had to earn his way — through years of scientific training, peer evaluation, and the kind of rigorous institutional selection that has no shortcut.
A neuroscientist, emergency physician, NASA astronaut, and executive leader, Dave has spent his career being chosen for roles that most people will only ever read about. What he does with those experiences — in books, on stages, in boardrooms, and in the field — is help others find the same principles that made those missions possible.
STS-118
Spacewalking
In August 2007, Dave stepped outside the International Space Station and held the fate of humanity's greatest engineering achievement in his hands — literally. As lead spacewalker on two of three EVAs during STS-118, he spent over 17 hours working in the vacuum of space, setting the Canadian record for spacewalks. On his second EVA, he spent more than four hours riding Canadarm2 — a ballet of engineering and nerve 400 kilometres above Earth.
"The view of our planet from space changes you. It reminds you what we're all here to protect."
NEEMO 1 & 9
Living Undersea
Long before living in space, Dave learned to live in another world entirely — the ocean floor. In 2001, he became the first Canadian to have lived and worked in both space and the sea, participating in NASA's NEEMO mission inside the Aquarius undersea habitat off the Florida Keys. By 2007, he was back as Commander of NEEMO 9, leading a mission to test how surgery and medical care could be delivered in the most remote environments imaginable — including deep space.
It turns out the ocean and space have a lot in common: extreme pressure, isolation, and the absolute requirement to trust your team.
STS-90
Neuroscience in Space
In 1998, Dave flew aboard Space Shuttle Columbia on STS-90 Neurolab — a 16-day mission entirely dedicated to understanding the human brain. With 26 experiments and a crew that doubled as both scientists and subjects, Neurolab contributed landmark research to the Decade of the Brain, studying how the nervous system adapts to microgravity.
For Dave — a neuroscientist by training and physician by practice — this was the perfect intersection of his worlds: medicine, science, and space exploration all converging 300 kilometres above Earth.
Exploration
Arctic and Antarctic
Space and the sea weren't enough — Dave has also journeyed to both polar regions of the Earth, exploring the Arctic and Antarctic with One Ocean Expeditions. These fragile, breathtaking environments reinforce what he witnessed from orbit: our planet is extraordinary, and worth every effort to protect.
Whether at the top of the world or the bottom of it, Dave carries the same spirit he brought to the ISS: wonder, respect, and an unshakeable drive to explore.
Honours & Recognitions
Officer of the Order of Canada
Member of the Order of Ontario
Inducted into the Canadian Aviation Hall of Fame
Seven Honorary Degrees
Canadian Spacewalk Record Holder — Three EVAs, Nearly 18 Hours Outside the International Space Station
The Person Behind the Missions
What strikes people who meet Dave Williams — after the credentials have landed — is how genuinely he means it when he says exploration is about curiosity, not achievement. Life is a quest for meaningful experiences. He grew up a kid from Saskatchewan who watched the Apollo missions and wondered what was possible. He still thinks about it the same way.
"The missions were his. The lessons are everyone's. That's the point."