This study examined relationships between college students' writing achievement goal orientations, writing self-regulatory behaviors and writing grades. The study was conducted in a postsecondary setting at a large public university. Using multivariate techniques, survey and writing sample data were gathered to address the following research questions: Do college students' writing achievement goals relate to their writing grades; do college students' writing achievement goals relate to their writing self-regulation; and, does writing self-regulation partially mediate the relationship between writing achievement goals and writing grades in college writing classrooms? A sample of 107 participants completed both the survey and writing prompt portions of the study. The findings contradict some of the prior literature on achievement goal orientations and self-regulation. However, these results help bridge a gap in the achievement goal orientation and self-regulation research, as prior studies have predominantly focused on PK-12 settings and domains other than writing.