Do I Need to Submit the Test of English As A Foreign Language (toefl) for Applying to University of Southern California?

Yes. University of Southern California requires to submit the TOEFL (Test of English as a Foreign Language) to its applicants. The next table summarizes the application requirements at University of Southern California.

Application Requirements
University of Southern California
SAT Test Score	✓
ACT Test Score	✓
High School GPA	✔
High School Rank	✓
High School Record	✔
Completion Of College-preparatory Program	✔
Recommendations	✔
Formal Demonstration Of Competencies	✔
TOEFL (Test Of English As A Foreign Language)	✔
Other Test (Wonderlic, WISC-III, Etc.)	✗
✔ Required △ Considered (not Required) ✓ Recommended ✗ Neither Required nor Recommended