Please note that the formatting of these lists has changed, and events are now listed by area where possible (unless in date order)
Individual events in date order
Sat 4 Oct - Mamma Mia Film Night & Singalong in Cirencester
Sun 5 Oct - FishFete Family Fun Day in Quedgeley, Gloucester
Sat 11 Oct - Autumn Craft Fair in Cirencester
Sun 12 Oct - Little Pickles Market in Cirencester
Tue 14 Oct - Rope Bowls workshop in Gloucester
Sat 18 Oct - Retro Gaming Festival near Longlevens, Gloucester
Sat 18 Oct - Gloucestershire Scrapstore Saturday opening
Sun 19 Oct - Children's Halloween Crafternoon in Hucclecote, Gloucester
Thu 23 Oct - Halloween candle painting workshop in Cirencester
Sat 25 Oct - All Hallows Eve alternative night in Tewkesbury
Sat 25 Oct - Halloween Party in Podsmead, Gloucester
Sat 25 Oct - Kids Halloween Party in Hucclecote, Gloucester
Sat 25 Oct - Halloween family party & disco at Churchdown Community Centre, near Innsworth
Thu 30 Oct - Trick or Treat event at Duke of Gloucester Barracks, South Cerney
Fri 31 Oct - Cotswold Scareport presents '747 Fright Flight 25' near Cirencester
Fri 31 Oct - The Hallow-Emo Ball for over 18's in Gloucester
Fri 31 Oct - 'Trick or Treat' Brush Party family event in Cheltenham
Multiple dates & seasonal events
Mon 29 Sep-Sun 5 Oct - Eat, Drink & Discover Week and Festival Day in Cheltenham
Thu 9-Fri 10 Oct - Tewkesbury Mop Funfair
Fri 10-Sun 19 Oct - Cheltenham Literature Festival
Sat 11-Sun 12 Oct - Dog swims at Cheltenham Lido
Sat 11-Fri 31 Oct - Pumpkin Patch at Cirencester Park
Sat 18-Sun 19 Oct - Cirencester Autumn Market
Sat 18-Sun 19 Oct - The Big Bark at Cirencester Park
Sat 18 Oct-Sun 2 Nov - Autumn Trail at Cerney House Gardens, near Cirencester
October half-term events with The Cheltenham Trust
Pumpkin Patch at Cotswold Farm Park, near Cheltenham
Halloween, Oktoberfest, half-term events and more at Dunkertons Cider, Cheltenham
Pumpkin picking and a Halloween festival at Over Farm, Gloucester
Poppy Fields at Gloucester Cathedral
Halloween events for little ones and pups at Dobbies Garden Centre, Cirencester
Recurring list of event spaces, tourism websites, etc.
The Paint Club painting workshops across Gloucestershire
Classes and events at The Spotty Dog Place, Tewkesbury
Workshops at The Tewkebury Makers Hub
Sudeley Castle & Gardens, near Cheltenham
Cotswold Farm Park, near Cheltenham
Events and regular groups at Churchdown Community Centre, near Innsworth
GL3 Community Hub in Churchdown
Imjin Station Community Centre, Innsworth
The Nature & Art Museum, Gloucester
Painswick Rococo Garden, near Stroud
The Corinium Museum in Cirencester
New Brewery Arts in Cirencester
Ciren Scene - local news and events
Cirencester Town Council 'what's on' page
Ideas from 'Cirencester Rocks'
Community workshops and events at The Heart Safe Clinical Academy in Cirencester
Events at Dobbie's Garden Centre, Cirencester
The Butts Farm Rare Breeds Centre, South Cerney
Events and workshops at Highgrove Gardens
Cattle Country Farm Park, near Stroud
Slimbridge Wetland Centre, near Stroud
Brush Party 'Sip & Paint' events across Gloucestershire
'Let's Paint' events across Gloucestershire
National Trust - Gloucestershire & The Cotswolds
'Explore Gloucestershire' website
Gloucestershire Wildlife Trust events
Little City play events across Gloucestershire
Trainmaster events across Gloucestershire
Information provided by Colerne & Lyneham HIVEs