The essence of audit quality is to assure the users that the financial statements contain no material misstatements. It show that the credibility and reliability of audited financial statements is what produce audit quality. This reliability and credibility are what assuring the investors, creditors and other resource providers that their investments are secured. However, the family and foreign ownership have the potential to affect the quality of an audit which in turn impair audit quality. This study examines the effect of family and foreign ownership on audit quality of listed manufacturing firms in Nigeria using secondary data extracted from published audited annual reports and accounts of manufacturing firms in Nigeria. Using 384 firm-year observations of 32 out of the total 59 listed manufacturing in Nigeria for 12 years, 2005-2016. Logistic regression technique was used for data analyses and test the hypotheses with the aid of STATA. The results show a positive significant effect of foreign ownership on audit quality, while inverse significant effect of family ownership on audit quality. The study recommends among other things, that there should be upward review of foreign ownership, and downward review of family ownership. It will encourage these group of owners to put in their best to effectively monitor the audit quality thereby giving assurance and confidence to other forms of ownership in the manufacturing firms that their investments are secured.