In Truro, town crier Lionel Knight began proceedings on the steps of Truro Cathedral.
This was followed by a wreath-laying service at the war memorial on Boscawen Street.
St Ives also held a wreath-laying ceremony attended by the St Ives Royal British Legion.
Live music and concerts
Live music was taking place on Plymouth Hoe before an evening concert at 17:30.
In Okehampton, vintage music was being performed throughout the day from artists Terrie-May Nightingale and Jive Junction.
There was also live performances from local musicians and choirs at Pendennis Castle in Falmouth.
Alison Dawe, local volunteer for English Heritage, said there had been "lots of interest" in tours at the castle throughout the day.
"People were really surprised about what was going on down here [and the part Cornwall played in the war], but it's important to share our history," she said.
Bell ringing and beacon lighting
A chorus of bells rang from cathedrals and churches across the country at 18:30, followed by beacon lighting events in a nationwide event at 21:30.
There was also bell ringing at Truro Cathedral, as well as other churches in the area, and at 21:30 the beacon will be lit at Truro Cathedral.
In St Austell, St Paul's Church in Charlestown and St Levan's in Higher Porthpean rang a peal of bells to mark the occasion.
In Falmouth, a beacon was lit at Pendennis Castle.
