Credit Availability for Women-Owned Businesses Act of 2003 - Amends the Federal Deposit Insurance Corporation Improvement Act of 1991 to direct the appropriate Federal banking regulatory agency to prescribe regulations requiring insured depository institutions to submit information annually in their reports of condition on lending to women-owned businesses, defined as any business: (1) more than 50 percent of the outstanding shares of which are held by oneor more women; and (2) a majority of the directors on the board of directors of which are women.