Williamnagar Government College Students' Union (WGCSU) is the general body of the students of the College. Its membership is compulsory for every student admitted into the College. The office bearers of the Union are elected annually through direct ballot as per J M Lyngdoh Committee recommendation. The term of the office bearers is one year. The following are the various posts of the Williamnagar Government College Students' Union.
The students' Union of the College plays a prominent role in building a cordial relationship between the college administration, Faculty, and students. The Union also organizes various sports, Debates, Cultural Programmes, and Social Services and motivates the students to participate in all the institution's Programmes. Apart from this, the Students' Union and respective committees involving faculty members are also allowed to manage and organize the functions like fresher's meet, Parting social, annual College week, etc. of the institution.