Accounting Firms   Home > Accounting & Auditing Center > Accounting Firms The Big Four The Big Four firms — Ernst & Young LLP, PricewaterhouseCoopers, KPMG LLP and Deloitte & Touche LLP — audit more than 78 percent of all U.S. public companies, according to the U.S. General Accounting Office. source: http://www.issproxy.com/articles/2003archived/archived99.asp Here's a listing, with links to their websites, of the top 100 accounting firms. Ms. Sarbox reads the news every day and collects articles about accounting and auditing. See them on Ms. Sarbox's Accounting News page and Auditing News page.