In a op-ed posted on The Washington Post's website Sunday, Cook said bills under consideration in more than two dozen states could enable discrimination and "undo decades of progress toward greater equality."
"These bills rationalize injustice by pretending to defend something many of us hold dear," Cook said. "They go against the very principles our nation was founded on, and they have the potential to undo decades of progress toward greater equality."
Laws that allow companies to use faith as a reason to deny service to gays and lesbians would "hurt jobs, growth and the economic vibrancy" of particular parts of the country, Cook said in his piece.
"America's business community recognized a long time ago that discrimination, in all its forms, is bad for business. At Apple, we are in business to empower and enrich our customers' lives. We strive to do business in a way that is just and fair," said Cook, who publicly declared his homosexuality last year.