Ethics in the construction industry has emerged as a critical topic of concern due to the industry’s complex and multifaceted nature and susceptibility to corruption and unethical practices. However, there is more to ethics than corruption, and the existing literature lacks a state-of-the-art review of ethical discourse in construction. Due to this limitation, it could be challenging for construction management scholars to understand the advances made in the realm of construction ethics, grasp a holistic understanding, and chart future research. Therefore, our study aims to examine ethical discourse in construction comprehensively. This study uses a mixed-method literature review (MMLR), combining bibliometric analysis and a systematic literature review. We analyzed 328 articles published between 1990 and 2023. First, through a bibliometric analysis conducted on the data sets obtained from Scopus and Web of Science, we identified publication trends, influential authors, prolific journals, impactful institutions, and countries in the field of construction ethics. Second, through a systematic literature review of 125 journal articles, we mapped the qualitative aspects of ethical discourse in construction. The meticulous review process elucidated the critical theoretical paradigms (economics, institutional, strategic stakeholder management, psychology, sociology, and ethics), emerging research themes (culture, corruption, professional development, welfare, leadership, technology, compliance, environment, social and governance (ESG), practices, project procurement, and stakeholder), and prominent analytical approaches used to study ethics-related issues in construction. The present study also mapped the ethical discourse on a multilevel (macro, meso, and micro) ethical governance framework and explored the geographical contexts and spread of ethics and ethical discourse. Finally, we presented potential future research trajectories by employing the theory-characteristics-context-methods (TCCM) framework that could encourage scholarly investigation in this domain.