Nipsai or Nipsaioi ( el, Νιψαίοι) is the name of a
Thracian
The Thracians (; grc, Θρᾷκες ''Thrāikes''; la, Thraci) were an Indo-European speaking people who inhabited large parts of Eastern and Southeastern Europe in ancient history.. "The Thracians were an Indo-European people who occupied ...
tribe.
[The Histories (Penguin Classics) by Herodotus, John M. Marincola, and Aubery de Selincourt, , 2003, page 271, "The Thracians of... those who live beyond Apollonia and Mesembria, known as the Scyrmiadae and Nipsaeans, surren- dered without fighting; but the Getae, ..."] They are mentioned by
Herodotus
Herodotus ( ; grc, , }; BC) was an ancient Greek historian and geographer from the Greek city of Halicarnassus, part of the Persian Empire (now Bodrum, Turkey) and a later citizen of Thurii in modern Calabria ( Italy). He is known for ...
.

References
See also
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Thracian tribes
This is a list of ancient tribes in Thrace and Dacia ( grc, Θρᾴκη, Δακία) including possibly or partly Thracian or Dacian tribes, and non-Thracian or non-Dacian tribes that inhabited the lands known as Thrace and Dacia. A great number o ...
Ancient tribes in Thrace
Thracian tribes
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