150s

The 150s ran from January 1, 150, to December 31, 159.

The Roman Empire was ruled by Antoninus Pius for the whole of this decade. The Roman Empire was relatively peaceful this decade, being in the middle of the Pax Romana and there being no major external wars. Claudius Ptolemy completed two major works this decade, the Geographia, the earliest known atlas, and the Almagest, a treatise accepted for over 1200 years.

• The Roman town Forum Hadriani (Voorburg) receives the title of Municipium Aelium Cananefatium, "the town of the Cananefates" (modern Netherlands). The town is awarded with rights to organize markets.
• The Germans of the east move south, into the Carpathians and Black Sea area.
• The Albani appear in the Roman province of Macedonia, specifically in Epirus.

• First and only year of the "Heping" era of the Han dynasty in China.

• The Middle Culture period of Mayan civilization ends (approximate date).
• The Great Pyramid of the Sun is constructed in Teotihuacan. It is the tallest pre-Columbian building in the Americas.

• Marcion of Sinope produces his Bible canon, consisting of purged versions of the Gospel of Luke and ten Pauline letters (approximate date).

• The earliest atlas (Ptolemy's Geography) is made (approximate date).
• This is also the approximate date of completion of Ptolemy's monumental work Almagest. The geocentric cosmology contained in it holds sway for 1,400 years.
• Antoninus Liberalis writes a work on mythology (Μεταμορφωσεων Συναγωγη) (approximate date).
• Paper, made in China, arrives in Transoxiana.

• Mytilene and Smyrna are destroyed by an earthquake.
• First year of Yuanjia of the Chinese Han dynasty.

• Detail from a rubbing of a stone relief in Wu family shrine (Wuliangci), Jiaxiang, Shandong, is made (Han dynasty).

• The Chinese domination of the Tarim Basin weakens.

• Minor uprisings occur in Roman Egypt against Roman rule.

• Change of era name from Yuanjia (3rd year) to Yongxing of the Chinese Han Dynasty.

• King Eupator of Bosphorus pays tribute to Rome, due to the threat posed by the Alani.
• The Antonine Wall is completed.

• Last (2nd) year of Yongxing era of the Chinese Han Dynasty.
• Adalla becomes ruler of the Korean kingdom of Silla.

• Anicetus becomes pope of Rome (approximate date).
• Anicetus meets with Polycarp of Smyrna to discuss the Computus, the date of Easter in the Christian liturgical calendar.
• Change of Patriarch of Constantinople from Patriarch Euzois to Patriarch Laurence.

• The Council of Rome, a pre-ecumenical church council, is held and presided over by Bishop of Rome Anicetus.

• The La Mojarra Stela 1 is produced in Mesoamerica.

• The heresiarch Montanus first appears in Ardaban (Mysia).

• A revolt against Roman rule begins in Dacia.

• In Jiuzhen (modern day Northern Vietnam), during the second Era of Northern Domination, a rebellion led by Chu Đạt breaks out and lasts for two to three years, until it is quelled by the Han Dynasty, under emperor Huan.

• The earliest dated use of Sol Invictus, in a dedication from Rome.
• A revolt against Roman rule in Dacia is crushed.

• Change of era name from Yongshou to Yangxi of the Chinese Han dynasty.

• In India, the reign of Shivashri Satakarni, as King Satavahana of Andhra, begins.