Assū (Shahmukhi: Panjabi; Punjabi: {{nq|اسو; Gurmukhi: Panjabi; Punjabi: ਅੱਸੂ, in Panjabi; Punjabi pronounced as /əsːuː/) is the seventh month of the Punjabi calendar, as well as the Nanakshahi calendar, which governs the Sikh tradition.
This month coincides with Ashvin in the Hindu calendar and the Indian national calendar, and September and October in the Gregorian and Julian calendars and is 30 days long.