Great Rigg is a fell in the English Lake District, 7 kilometres (4+1⁄4 miles) north-west of Ambleside and reaching a height of 766 metres (2,510 foot).

It is most often climbed as part of the Fairfield horseshoe, a 16-km circular walk which starts and finishes in Ambleside.

The fell's name originates from the Old English "Rigg", meaning a bumpy or knobbly ridge.

Great Rigg is mostly without merit, being just an undulation on one of Fairfield's southern ridges; with 31 metres (102 ft) of prominence it just qualifies as a Hewitt.

The fell is rocky on its eastern side as Stone Cove drops to Rydal Beck; on its western flank it is mostly grassy as it falls away to Tongue Gill; to the north and south are ridges which continue to other fells, with Fairfield being 1.5 kilometres (0.9 miles) away to the north while Heron Pike lies 2.5 kilometres (1.6 miles) to the south.