BIY Views 10 meanings found BIY can stand for Business in Yorkshire, a religious reading plan, or a DIY slogan such as Brew It Yourself, reflecting its use across commerce, faith communities, and hobbyist circles. Miscellaneous B I Y Brew It Yourself Beautify It Yourself Brew It Yourself Buy it yourself Bake It Yourself Community Bible In A Year International BIYoloji Regional Bisho, South Africa Business Business in Yorkshire Business in Yorkshire Build It Yourself