Puer may refer to:

• Pu'er tea, a variety of fermented tea, named after Pu'er in Yunnan Province
• Old Pu'er, present-day Ning'er Hani and Yi Autonomous County, China
• Pu'er City, a prefecture-level city in Yunnan, China, formerly known as Simao County
• Puer (geomancy), a geomantic figure

• Puer aeternus, Latin for 'eternal boy'
• Puer mingens, Latin for an artistic depiction of a boy urinating
• Puer oblatus, Latin for an oblate who has not yet reached puberty

• Puering or bating, a process using dog excrement or 'puer', as a step in the tanning of leather
• Puar (disambiguation)