Regular major events in Nillumbik
| Month | Events | Next date (if known) | Suburb |
| January | |||
| February | Eltham Jazz, Food & Wine Festival | not happening in 2021 | Eltham |
| March | Home Harvest Picnic | not happening in 2021 | Eltham |
| Open Farm Day | not happening in 2021 | Nillumbik-wide | |
| April | Native Plant Sale | Saturday, 24th | Eltham |
| May | Artists Open Studios | Saturday, 1st and Sunday, 2nd Saturday, 8th and Sunday, 9th |
Nillumbik-wide |
| June | Open Cellars Weekend | Saturday, 19th and Sunday, 20th | Nillumbik-wide |
| July | |||
| August | Hurstbridge Wattle Festival | Saturday, 29th | Hurstbridge |
| September | Diamond Creek Rotary Spring Town Fair | not happening in 2021 | Diamond Creek |
| Australian Plants Expo | Saturday, 11th and Sunday, 12th | Eltham | |
| October | On The Hill Festival | Panton Hill | |
| Eltham Mudbrick Tour | Nillumbik-wide | ||
| Open Cellars Weekend | Nillumbik-wide | ||
| November | Artists Open Studios | Saturday, 20th and Sunday, 21 Saturday, 27th and Sunday, 28th |
Nillumbik-wide |
| Rotary Eltham Festival | not happening in 2021 | Eltham | |
| December |