Primary thyroid mucosa associated lymphoid tissue(MALT) lymphoma is a rare extranodal Non Hodgkins Lymphoma (NHL)of the thyroid. It is most common in females, has an indolent course and mostly asymptomatic making the early diagnosis more challenging. There are no optimal guidelines for the management of thyroid MALT oma. We are presenting a case of unresectablethyroid MAL Toma treated with definitive radiotherapy. Patient is under complete response since 24 months of definitive radiotherapy. We emphasise the role of radiotherapy as single modality of treatment in early unresectable thyroid MALT omas with good local control.