[11] The dialects of Mazanderani are Saravi, Amoli, Baboli, Ghaemshahri, Chalusi, Nuri, Shahsavari, Ghasrani, Shahmirzadi, Damavandi, Firoozkoohi, Astarabadi and Katouli.

[9] Based on mtDNA HV1 sequences, the Gilaki and Mazanderani most closely resemble their geographic and linguistic neighbors, namely other Iranian groups.

[9] The Mazanderani and Gilaki groups are closely related on the male side with populations from the South Caucasus such as Georgians, Armenians, and Azerbaijanis.

[9] Analysis of their NRY patrilines has revealed haplogroup J2, associated with the neolithic diffusion of agriculturalists from the Near East, to be the predominant Y-DNA lineage among the Mazanderani (subclades J2a3h-M530, J2a3b-M67 and J2a-M410, more specifically.).

[14] The next most frequently occurring lineage, R1a1a, believed to have been associated with early Iranian expansion into Central/Southern Eurasia and currently ubiquitous in that area, is found in almost 25%,.

[14][15] Haplogroup G2a3b, attaining significant frequency together with G2a and G1, is the most commonly carried marker in the G group among Mazanderani men.

In addition, European travelers such as Chardin and Della Valle have written about their encounters with the Georgian, Circassian and Armenian Mazanderanis.