A novel canola variety designated S00636MI and seed, plants and plant parts thereof. Methods for producing a canola plant that comprise crossing canola variety S00636MI with another canola plant. Methods for producing a canola plant containing in its genetic material one or more traits introgressed into S00636MI through backcross conversion and/or transformation, and to the canola seed, plant and plant part produced thereby. Hybrid canola seed, plant or plant part produced by crossing the canola variety S00636MI or a locus conversion of S00636MI with another canola variety.