Written corrective feedback (WCF) is a ubiquitous pedagogical activity in second language (L2) classrooms and has become a key area of inquiry in L2 writing research. While there have been several reviews on experimental WCF research, there is not yet a synthesis of naturalistic classroom studies where the type and amount of feedback provided on students' writing performance is not manipulated or controlled. This state-of-the-art article intends to fill the gap by providing a comprehensive and critical review of naturalistic WCF studies in L2 writing, with significant implications for practice and research. A systematic search generated 50 empirical studies that met our inclusion criteria for the current review, which revealed four major themes: (1) teacher WCF practices in L2 writing classrooms, (2) L2 learner responses to WCF, (3) stakeholders' beliefs and perspectives on WCF, and (4) WCF-related motivation and emotions. Based on the reviewed evidence, we propose pedagogical implications for enhancing teacher WCF practices and student learning, as well as potential avenues for further exploration. This article contributes to a nuanced understanding of current empirical advances in naturalistic research on WCF in L2 writing, providing insights to inform WCF pedagogy and new lines of inquiry.