Vertaizon (; ) is a commune of the department of Puy-de-Dôme in the region Auvergne-Rhône-Alpes. It is part of the urban area of Clermont-Ferrand.
Vertaizon is built on a hill giving a view on the Limagne and Pont-du-Château from its summit, where is situated the ancienne église ("the Ancient church") and the wall from the former castle (destroyed on the orders of Cardinal de Richelieu during the 17th century).
The commune stretches from the foot of the hill to the lieu-dit Chignat.
The foire de Chignat ("fair of Chignat"), former "melons' fair", is one of the oldest fairs in France: its oldest occurrence in documents is from 1303. This event takes place every year at the beginning of September in the field near the Castle of Chignat.
In 1195, the lordship of Vertaizon belonged to the troubadour , who was eventually attacked by bishop , at war with his brother the count , a close friend of the lord of the city.
The town possess a commercial area and two (Association Départementale des Amis et Parents de Personnes Handicapées Mentales, "Departmental Association of Friends and Relatives of Mentally Disabled Persons").
Eight shops were identified in 2014 : one grocery store, three bakers, one library-newspaper seller, one watchmaker-jeweler and two florists.