Academic Calendar | Oregon State University

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Academic Calendar

Welcome!

Navigating the calendar

  • The OSU Academic Calendar displays important term dates in ascending order by month and year.
  • Terms that have passed are viewable in the Archived terms section below.
  • The filters can be used to view a specific Category of dates, a Term, a Term Session, and an Academic Year.
  • The majority of OSU courses are held in the Full Term Session, but the non-standard term and the individual summer session dates are also displayed.
  • Use the filter options to see dates and deadlines for a specific term and session. For example, select Fall in the Term dropdown and then select Full Session in the Term Session dropdown, select the Academic Year, then click Apply to see all the important dates for the regular 11-week fall term.

View a quick tutorial video

A submission time of 11:55 p.m. (Pacific Time) applies to all registration deadlines unless stated otherwise.

Archived terms

  • Fall 2024- Summer 2025
  • Fall 2025

Academic calendar filters

Category - Any -CommencementFinals WeeksGrades Posted OnlineHolidaysPriority Registration DatesRegistration DeadlinesTerm Dates Term - Any -FallWinterSpringSummer Term Session - Any -Full SessionSummer Session 2 (1st 4-Week)Summer Session 3 (8-Week)Summer Session 4 (2nd 4-Week)Summer Session 5 (3-Week)Summer Session 6 (Zero Week; 1-Week)Super Term (Term Extension + Full Term)Term 5A - 1st 5 WeeksTerm 5B - 2nd 5 WeeksTerm Extension (Pre-Term) Academic Year - Any -2025-2026 December 2025 - January 2026
Month/Day Day of Week Name
Dec 22 - Jan 2 Monday - Friday Winter Term Extension Dates
December 2025
Month/Day Day of Week Name
Dec 22 Monday Winter Term Extension Classes Begin
Dec 22 Monday Winter Super Term Classes Begin
Dec 23 Tuesday Last Day to Drop a Winter Extension Course (100% Tuition Refund)
Dec 23 Tuesday Last Day to Add a Winter Extention Course Online without Dept. Approval
Dec 30 Tuesday Last Day to Change the Grading Basis of a Winter Extension Course (by noon)
Dec 30 Tuesday Last Day to Withdraw from a Winter Extension Course (No Refunds Available)
December 2025 - March 2026
Month/Day Day of Week Name
Dec 22 - Mar 13 Monday - Friday Winter Super Term Dates
January 2026
Month/Day Day of Week Name
Jan 2 Friday Last Day to Drop a Winter Super Term Course (100% Tuition Refund)
Jan 2 Friday Winter Extension Classes End
Jan 5 Monday Winter Term 5A - 1st 5 Weeks Classes Begin
Jan 5 Monday Winter Term Classes Begin
Jan 9 Friday Last Day to Add a Winter Super Term Course Online without Dept. Approval
Jan 9 Friday Last Day to Drop a Winter Term 5A - 1st 5 Weeks Course (100% Tuition Refund)
Jan 11 Sunday Last Day to Drop a Winter Course (100% Tuition Refund)
Jan 11 Sunday Last Day to Add a Winter Course Online without Dept. Approval
Jan 11 Sunday Last Day to Add a Winter Term 5A - 1st 5 Weeks Course Online without Dept. Approval
Jan 18 Sunday Last Day to Add a Winter Term Course Online with Dept. Approval
Jan 19 Monday Martin Luther King Jr. Day
Jan 25 Sunday Last Day to Withdraw from a Winter Course (50% Tuition Refund)
Jan 30 Friday Last Day to Withdraw from a Winter Term 5A - 1st 5 Weeks Course (No Refunds Available)
Jan 30 Friday Last Day to Change the Grading Basis of a Winter Term 5A - 1st 5 Weeks Course (by noon)
January 2026 - February 2026
Month/Day Day of Week Name
Jan 5 - Feb 6 Monday - Friday Winter Term 5A - 1st 5 Weeks Dates
January 2026 - March 2026
Month/Day Day of Week Name
Jan 5 - Mar 20 Monday - Friday Winter Term Dates
January 2026 - January 2026
Month/Day Day of Week Name
Jan 12 - Jan 16 Monday - Friday Audit a Winter Course (Friday by 5 pm)
February 2026
Month/Day Day of Week Name
Feb 6 Friday Winter Term 5A - 1st 5 Weeks Course Classes End
Feb 9 Monday Winter Term 5B - 2nd 5 Weeks Classes Begin
Feb 13 Friday Last Day to Drop a Winter Term 5B - 2nd 5 Weeks Course (100% Tuition Refund)
Feb 15 Sunday Last Day to Add a Winter Term 5B - 2nd 5 Weeks Course Online without Dept. Approval
Feb 20 Friday Last Day to Change the Grading Basis of a Winter Super Term Course (by noon)
Feb 20 Friday Last Day to Change the Grading Basis of a Winter Course (by noon)
Feb 20 Friday Last Day to Withdraw from a Winter Super Term Course (No Refunds Available)
Feb 20 Friday Last Day to Withdraw from a Winter Course (No Refunds Available)
Feb 23 Monday Spring Priority Registration Opens
February 2026 - March 2026
Month/Day Day of Week Name
Feb 9 - Mar 13 Monday - Friday Winter Term 5B - 2nd 5 Weeks Dates
March 2026
Month/Day Day of Week Name
Mar 6 Friday Last Day to Change the Grading Basis of a Winter Term 5B - 2nd 5 Weeks Course (by noon)
Mar 6 Friday Last Day to Withdraw from a Winter Term 5B - 2nd 5 Weeks Course (No Refunds Available)
Mar 13 Friday Winter Term Classes End
Mar 13 Friday Winter Term 5B - 2nd 5 Weeks Course Classes End
Mar 13 Friday Last Day to Withdraw from Winter Term
Mar 13 Friday Winter Super Term Classes End
Mar 16 Monday Winter Finals Week Begins
Mar 20 Friday Winter Term Ends
Mar 23 Monday Spring Super Term Classes Begin
Mar 23 Monday Spring Term Extension Classes Begin
Mar 24 Tuesday Last Day to Drop a Spring Extension Course (100% Tuition Refund)
Mar 24 Tuesday Last Day to Add a Spring Extention Course Online without Dept. Approval
Mar 25 Wednesday Winter Extension Grades Available Online
March 2026 - June 2026
Month/Day Day of Week Name
Mar 23 - Jun 5 Monday - Friday Spring Super Term Dates
March 2026 - March 2026
Month/Day Day of Week Name
Mar 23 - Mar 27 Monday - Friday Spring Term Extension Dates

Pagination

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Download the Academic Calendar

The weeks of the term and deadlines for the full sessions are available via download.

Follow the instructions included in the following document.

Instructions for subscribing to the Academic Calendar

Additional calendars and deadlines

OSU's 4-year Calendar

View Student Billing Deadlines

View Faculty Grading Deadlines

A visualization of all the sessions in an academic year and how they intersect can be found below:

2025-2026 Academic Year Sessions

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