Janke
A German and West Slavic diminutive surname from Jan, the local form of John.
The #8,330 most common surname in the United States (2010 Census) — about 1 in every 77,633 Americans shares it.
Etymology
Janke is best understood as a diminutive formed from Jan, the short form of John. In German usage, it fits the family of names in -ke, a common diminutive ending in the north; the old sources also note that similar forms can arise in Slavic naming, especially through Janek. So the core sense is essentially “little Jan” or “descendant of Jan,” ultimately tied to the name John.
History
Historical surname writers place Janke in the overlap zone between German and Slavic naming, especially in the east and north of the German-speaking world. It appears as both a German diminutive and a Slavic-influenced form, which explains why the surname is found across regions where those traditions met. The name is still most readily recognized today as a surname from German-speaking and adjacent Central/Eastern European areas.
Origin
Regions
Variant spellings
Fun fact
19th-century surname scholars explicitly listed Janke alongside Janiche(n) and Janicke as a diminutive of Johann/John.
From the historical record
“in sich schließen, haben zwar ebenfalls die deutschen Verkleinerungsformen auf l und x (tsch), doch häufiger das aus zwei Quellen (niederdeutsch und wendisch) fließende Suffix k: Janke, Paulke, Hanmiske, Dammaschk, Scholtka^ Hanko. Bisweilen sind / oder x mit k in deutschen Zwitterformen wie Henkel^ Kunxke…”
— Die deutschen Familiennamen