{{short description|none}} {{Use mdy dates|date=February 2025}} {{unreferenced|date=October 2025}} In 2018, NASCAR sanctioned three national series and six regional touring series.
==National series== * 2018 Monster Energy NASCAR Cup Series – The top racing series in NASCAR * 2018 NASCAR Xfinity Series – The second-highest racing series in NASCAR * 2018 NASCAR Camping World Truck Series – The third-highest racing series in NASCAR
==Touring series== * 2018 NASCAR K&N Pro Series West – One of the two K&N Pro Series * 2018 NASCAR K&N Pro Series East – One of the two K&N Pro Series * 2018 NASCAR Whelen Modified Tour – The modified tour of NASCAR * 2018 NASCAR Pinty's Series – The top NASCAR racing series in Canada * 2018 NASCAR PEAK Mexico Series – The top NASCAR racing series in Mexico * 2018 NASCAR Whelen Euro Series – The top NASCAR racing series in Europe
{{s-start}} {{succession box | before = 2017 in NASCAR | after = 2019 in NASCAR | title = NASCAR seasons | years = 2018 | }} {{s-end}}
Category:2018 in NASCAR Category:NASCAR seasons Category:2018 sport-related lists