FirstGroup plc (LSE: FGP) is a public transport company, registered in Scotland at its headquarters in Aberdeen, operating in the United Kingdom, Ireland, Denmark, Sweden, Canada and the United States. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.

FirstGroup originated from the deregulation of bus services in the United Kingdom, whereby private companies purchased former nationalised and municipal bus operators.

In 1989 the council-owned Aberdeen city municipal bus operator Grampian Regional Transport was purchased by its employees in a deal led by its then general manager Moir Lockhead, the future FirstGroup Chief Executive. The company expanded through acquisition as the GRT Group purchasing six former nationalised bus companies in England and Scotland. Elsewhere in the UK, the Badgerline Group had similarly grown through acquisitions of former nationalised bus companies in England and Wales accumulating 12 companies such as Western National, from similar beginnings to GRT from privatisation of the Somerset-based bus company Badgerline, sold to its management in 1986.