The Metropolis of Lyon (French: Métropole de Lyon, pronounced [metʁɔpɔl də ljɔ̃] ), also known as Grand Lyon ([ɡʁɑ̃ ljɔ̃], "Greater Lyon"), is a French territorial collectivity in the east-central region of Auvergne-Rhône-Alpes. It is a directly-elected metropolitan authority, encompassing both the city of Lyon, and most of its suburbs. It has jurisdiction both as a department, and as a metropolis, which excludes its territory from direct responsibility to the French government department of Rhône. It had a population of 1,424,069 in 2021, 36.7% of whom lived in the city of Lyon proper.

It replaced the Urban Community of Lyon on 1 January 2015, in accordance with the MAPAM law (fr) enacted in January 2014. The first direct metropolitan elections were held in March (1st round) and June (2nd round) 2020, leading to a victory by The Ecologists. The president of the metropolitan council has been Green Party leader Bruno Bernard, since July 2020.

The Metropolis of Lyon covers an area of 533.7 km (206.1 sq mi). It covers the city of Lyon and its main suburbs. The rivers Rhône and Saône flow through it. It borders the department Rhône to the northwest and southwest, Ain to the northeast, and Isère to the southeast.

The Metropolis of Lyon consists of 58 communes. The most populous commune is Lyon. As of 2019, there are 9 communes with more than 30,000 inhabitants:

Commune	Population (2019)
Lyon	522,969
Villeurbanne	152,212
Vénissieux	67,285
Vaulx-en-Velin	52,795
Saint-Priest	46,927
Caluire-et-Cuire	43,294
Bron	42,244
Meyzieu	34,640
Rillieux-la-Pape	30,697

• Metropolitan Council of Lyon
• Parks in Lyon

• Metropolitan Lyon website (in French)
• The Greater Lyon official business website (in English)
• What does the Metropolis of Lyon do? Two minutes to understand everything on YouTube (in French)