圣路易斯大学（Saint Louis University，简称 SLU）是一所位于美国密苏里州圣路易斯的私立大学，创设于1818年；另有分校区位于西班牙马德里。 该校是密西西比河以西历史最悠久的大学、也是全美耶稣会大学里历史第二悠久的，隶属于耶稣会学院和大学联合会。 该校有学生13505人，其中本科生8687人，研究生4818人。师生比例为1比12，平均教学班级大小为23.8人。 《美国新闻与世界报道》2014年将该校排在全国101名。

Saint Louis University (SLU, /ˈsluː/) is a private research university with campuses in St. Louis, Missouri, United States and Madrid, Spain. Founded in 1818 by the Most Reverend Louis Guillaume Valentin Dubourg, SLU is the oldest university west of the Mississippi River and the second-oldest Jesuit university in the nation. It is one of 28 member institutions of the Association of Jesuit Colleges and Universities. The university is accredited by the North Central Association of Colleges and Secondary Schools. SLU's athletic teams compete in NCAA's Division I and the Atlantic 10 Conference. It has a current enrollment of 13,505 students, including 8,687 undergraduate students and 4,818 graduate students, representing all 50 states and more than 70 foreign countries. Its average class size is 23.8 and the student-faculty ratio is 12:1.