The pourpose of this research wa to examine the effect of audit knowledge, working experience, accountability, professional ethics, and independence on audit quality. The data used in this research was primary data. This research was conducted by distributing questionnaries to auditors in public Accounting Firm located in Tangerang and Jakarta in 2019. Auditors who became respondents in this research were auditors with minimal position as senior auditor with working experience of more than there years and educated at least bachelor degree in accounting. There were 170 questionnaires distributed for this research, but only 160 questionnaries returned and 115 questionnaries used in this research using multiple linear regression. The result of this research were audit knowledge, working experince, and professional ethics has significant influence toward audit quality. Meanwhile, accountability and indepence has no influence toward audit quality.