The paper deals with representative aspects of Moravian and Silesian minor place names containing the personal name Jan (English John). In the first part, formal features of the respective anoikonyms are described, i. e. dialectal phonology and morphology. Then the author focuses on historical and local variation (including communication variants), motivation and structure of representative names. Qualitative data analysis showed the most popular motivation was a relation to local persons named Jan associated with the place ‒ property of the named object or a location near this property. Objects have rarely been named by local persons associated with the place, e. g. a forest named by his founder. Sometimes the reason for naming is not known, because there is not a record of the namegiver’s motivation. In terms of structural analysis, two-word (or multiple-word) names predominate, especially the combination of possessive adjectives derivated from the personal name Jan and originally the common name of the object (e. g. vrch ‚hill‘, důl ‚mine‘). Other structural types are less common.