R.I. Gen. Laws § 34-18-37: Termination of periodic tenancy.

(a) The landlord or the tenant may terminate a week-to-week tenancy by a written notice, in a form substantially similar to that provided in § 34-18-56(c), delivered to the other at least ten (10) days before the termination date specified in the notice.

(b) The landlord or the tenant may terminate a month-to-month tenancy or any periodic tenancy for more than a month or less than a year by a written notice, in a form substantially similar to that provided in § 34-18-56(c), delivered to the other at least thirty (30) days before the date specified in the notice.

(c) The landlord or tenant may terminate a year-to-year tenancy by written notice, in a form substantially similar to that provided in § 34-18-56(c), delivered to the other at least three (3) months prior to the expiration of the occupation year.