Nicholas Hallman is an associate professor of accounting for the McCombs School of Business at The University of Texas at Austin. At McCombs, he taught an introductory course on auditing before pivoting to create and teach a new data analytics course for accounting students.

His research focuses primarily on auditors and other information intermediaries in financial markets and has been published in numerous peer-reviewed academic journals, such as Contemporary Accounting Research, the Journal of Accounting and Economics, Review of Accounting Studies, the Journal of Accounting Research, and AUDITING: A Journal of Practice and Theory. Hallman sits on the editorial boards of several publications. He has also served as an ad hoc reviewer for many journals.

Hallman worked for several years as an auditor at Deloitte. He earned a Ph.D. in accounting from the University of Missouri and holds a B.S. and M.S. in accounting from Appalachian State University.