Editing Ob (section)

==Names==
The internationally known name of the river is based on the Russian name ''Обь'' (''Obʹ'', {{IPA|ru|opʲ|IPA}}). Possibly from [[Proto-Indo-Iranian language|Proto-Indo-Iranian]] ''[[Ap (water)|*Hā́p-]]'', "river, water" (compare [[Vedic Sanskrit]] ''áp-'', [[Persian language|Persian]] ''āb'', [[Tajik language|Tajik]] ''ob'', and [[Pashto language|Pashto]] ''obə'', "water"). Katz (1990)<ref>Katz, Hartmut. Zum Flußnamen ''Ob''. — ''Specimena Sibirica III'', pp. 93–95. Wien.</ref> proposes [[Komi language|Komi]] ''ob'' 'river' as the immediate source of derivation for the Russian name. Katz's proposal of a common Finno-Ugric root, borrowed early on from a pre-Indo-Iranian source related to Sanskrit ''ambhas-'' 'water' is deemed improbable by Rédei (1992),<ref>Rédei, Károly. Szófejtések. — [http://www.nytud.hu/nyk/reg/093.pdf,''Nyelvtudományi Közlemenyek'' 93], pp. 125–135.</ref> who prefers to analyse this as a later loan from a descendant of the non-nasal root form ''*Hā́p-''.

The Ob is known to the [[Khanty people]] as the ''As'' (the source of the name "[[Ostyak]]"), ''Yag'', ''Kolta'' and ''Yema''; to the [[Nenets people]] as the ''Kolta'' or ''Kuay''; and to the [[Siberian Tatars]] as the ''Umar'' or ''Omass''.<ref name="EB1911">{{EB1911|inline=y|wstitle=Ob|volume=19|page=944}}</ref>