Purpose - The purpose of this paper is to investigate whether transformational leadership affects auditor objectivity. Design/methodology/approach - The investigation is based on a field survey of 198 practicing auditors employed by audit firms operating in Sweden. Findings - This study finds that transformational client leadership negatively affects auditor objectivity and that the effect is only partially mediated by client identification. Given these results, suggesting that auditors are susceptible to influence by their clients' perceived exercise of transformational leadership, leadership theory appears relevant to the discussion of auditor objectivity in the accounting literature. Originality/value - Previous accounting research has applied the social identity theory framework and found that client identification impairs auditor objectivity. However, the effect of transformational client leadership on auditor objectivity, which reflects an intense auditor-client relationship, has been neglected before this study.