138 BC

Millennium:	1st millennium BC
Centuries:	3rd century BC – 2nd century BC – 1st century BC
Decades:	160s BC 150s BC 140s BC – 130s BC – 120s BC 110s BC 100s BC
Years:	141 BC 140 BC 139 BC – 138 BC – 137 BC 136 BC 135 BC

Politics
138 BC by topic
State leaders Sovereign states
Categories
Births Deaths Establishments Disestablishments

138 BC in other calendars
Gregorian calendar	138 BC
Ab urbe condita	616
Ancient Egypt era	XXXIII dynasty, 186
- Pharaoh	Ptolemy VIII Physcon, 8
Ancient Greek era	160th Olympiad, year 3
Assyrian calendar	4613
Bengali calendar	−730
Berber calendar	813
Buddhist calendar	407
Burmese calendar	−775
Byzantine calendar	5371–5372
Chinese calendar	壬寅年 (Water Tiger) 2559 or 2499 — to — 癸卯年 (Water Rabbit) 2560 or 2500
Coptic calendar	−421 – −420
Discordian calendar	1029
Ethiopian calendar	−145 – −144
Hebrew calendar	3623–3624
Hindu calendars
- Vikram Samvat	−81 – −80
- Shaka Samvat	N/A
- Kali Yuga	2964–2965
Holocene calendar	9863
Iranian calendar	759 BP – 758 BP
Islamic calendar	782 BH – 781 BH
Julian calendar	N/A
Korean calendar	2196
Minguo calendar	2049 before ROC 民前2049年
Seleucid era	174/175 AG
Thai solar calendar	405–406

Wikimedia Commons has media related to 138 BC.

Year 138 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Serapio and Callaicus (or, less frequently, year 616 Ab urbe condita). The denomination 138 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

By place

Parthia

Phraates II becomes Emperor of Parthia.

Asia

Zhang Qian begins his explorations in central Asia for Chinese emperor Han Wu Di.
The first Chinese diplomatic mission to the Ferghana valley, led by Chang Chien, is sent.
Han Dynasty China intervenes in a war between the Minyue and Eastern Ou during its expansion southward.

By topic

Arts and sciences

Hymn to Apollo is written and inscribed on stone in Delphi; it is the earliest surviving notated music, in a substantial and legible fragment, in the western world.