Amblers Safety from the UK offers some vegan safety shoes: https://www.amblerssafety.com/collections/vegan
Ethical Wares out of Wales in the UK offers several types of safety boots: https://www.ethicalwares.com/footwear/safety-footwear/
Stitchkraft located in Australia offers a wide variety of safety shoes and boots: https://www.stitchkraft.com.au/collections/vegan-friendly-work-boots-shoes
The Vegetarian Site from the USA offers two types of safety boots: https://store.thevegetariansite.com/index.php?route=product/category&path=84_100
Veganline located in London, England offers a safety shoe and boots: https://veganline.com/safety-boots-shoes