5 March St Piran's Day - patron saint of Cornwall
10 - 11 April Cornwall Garden Society Spring Flower Show, Boconnoc House, nr Lostwithiel
24 April Trevithick Day, Camborne 
1 May 'Obby 'Oss Day, Padstow
8 May Helston Flora Day
13 - 22 May Daphne du Maurier Festival of Arts and Literature, Fowey
10 - 12 June Royal Cornwall Show, Wadebridge
20 - 27 June Golowan and Mazey Day, Penzance
19 - 26 June Polperro Festival
10 July Liskeard Agricultural Show
23 - 25 July Port Eliot Festival "One of the UK’s most original, magical, bohemian, bookish, colourful, musical and humorous festivals "
23 - 25 July Boconnoc Steam Fair, Boconnoc House, nr Lostwithiel
15 - 21 Aug Fowey Royal Regatta and Carnival Week
28 - 30 Aug Morval Vintage Rally, near Looe
4 Sept the Annual Cornish Open Gorsedh -  in St Ives
6 Oct Honey Fair, Callington
13 Oct Goose Fair, Tavistock
7 - 21 Nov Taste South East Cornwall, celebrating fine, local food and drink in Looe and South East Cornwall
Nov10-Feb11 Eden Project Time of Gifts