AAC Springfield is a high protein soybean [Glycine max (L.) Merr.] cultivar developed by the Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, Ontario. It is intended for production in 2400 to 2600 crop heat unit areas of Manitoba, Ontario, and Quebec. AAC Springfield has a unique combination of high protein, high 11S:7S ratio, and early maturity.