Grŵp Llandrillo Menai (GLlM) is an umbrella organisation overseeing the operation of three member colleges in North Wales: Coleg Llandrillo, Coleg Menai and Coleg Meirion-Dwyfor.

It is Wales's largest further-education (FE) institution and one of the largest FE college groups in the UK. It employs 1,650 staff and delivers courses to around 34,000 students across north-west Wales and central north Wales in the counties of Anglesey, Conwy County Borough, Denbighshire and Gwynedd. As well as thirteen learning sites, the group owns business and research facilities.

Grŵp Llandrillo Menai was founded on 2 April 2012 by the corporate merger of Coleg Menai with the legal entity then known as Coleg Llandrillo Cymru (which had already subsumed Coleg Meirion-Dwyfor in 2010).

Grŵp Llandrillo Menai's thirteen sites are within the following local communities: Abergele, Bangor, Caernarfon, Colwyn Bay, Denbigh, Dolgellau, Glynllifon (near Llandwrog), Holyhead, Llangefni, Parc Menai (in Treborth near Bangor), Pwllheli, Rhos-on-Sea (near Colwyn Bay) and Rhyl. Many of these community sites are within annexes of libraries, schools and community centres.

Of those, the three principal campuses—that both cover a large area with multiple buildings and act as the headquarters of a constituent college—are, in descending order of size:

• Llandudno Road, Rhos-on-Sea (Coleg Llandrillo)
• Friddoedd Road, Bangor (Coleg Menai)
• Ty'n y Coed Road, Dolgellau (Coleg Meirion-Dwyfor)

• Grŵp Llandrillo Menai
• Grŵp Llandrillo Menai Facebook
• Grŵp Llandrillo Menai Twitter
• Coleg Menai website Archived 2018-06-12 at the Wayback Machine
• Coleg Llandrillo website Archived 2015-03-16 at the Wayback Machine
• Coleg Meirion-Dwyfor website

53°13′23″N 4°8′29″W / 53.22306°N 4.14139°W / 53.22306; -4.14139