Tiberius Julius Cotys II

{{Short description|King of the Bosporus from 123 to 131}}

{{Infobox royalty

| name = T. J. Cotys II

| image = Coin of Cotys II.png

| caption = Gold stater of the Bosporan king Cotys II, legend BACΙΛΕΩC ΡΟΙΜΗΤΑΛΚΟΥ. (Οther side: head of Hadrian, year ΥΚΓ΄ = 423 = 126/7) 19 mm, 7.78 g.

| succession = King of the Bosporus

| reign = 123 - 131

| predecessor = T. J. Sauromates I

| successor = T. J. Rhoemetalces

| reg-type1 =

| regent1 =

| dynasty = Tiberian-Julian

| issue = T. J. Rhoemetalces
T. J. Eupator

| father = T. J. Sauromates I

| death_date = 131

}}

Cotys II or Kotys II ({{langx|el| Τιβέριος Ἰούλιος Κότυς Β' Φιλοκαῖσαρ Φιλορωμαῖος Eὐσεβής}}, Tiberios Iulios Kotys Philocaesar Philoromaios Eusebes, flourished 2nd century, died 131) was a prince and Roman client king of the Bosporan Kingdom. Like many other later Bosporan kings, Cotys II is known mainly from coinage, alongside a few inscriptions and contemporary writings. His coins are known from the period 123–131.{{Cite book |last=Mitchiner |first=Michael |url=https://books.google.com/books?id=zuQLAQAAMAAJ |title=The Ancient & Classical World, 600 B.C.-A.D. 650 |date=1978 |publisher=Hawkins Publications |isbn=978-0-904173-16-1 |pages=69 |language=en}} Cotys II is known to have been the son of his predecessor Sauromates I.{{Cite book |last=Settipani |first=Christian |title=Continuité des élites à Byzance durant les siècles obscurs: les princes caucasiens et l'Empire du VI:e au IX:e siècle |publisher=De Boccard |year=2006 |isbn=978-2-7018-0226-8 |location=Paris |pages=408 |language=French |author-link=Christian Settipani}} His relationship to later kings is not known for certain, but it is possible that his two immediate successors Rhoemetalces and Eupator were his sons.

During his reign, the city of Chersonesus Taurica was under his direct control. Cotys II is mentioned in the writings of the Roman Historian Arrian and was a contemporary to the rule of the Roman emperor Hadrian.