881 (eight hundred [and] eighty-one) is the natural number following 880 and preceding 882.

881 is:

• the 152nd prime number^{[1][unreliable source?]}
• a Paid Toll Free telephone number prefix in the USA^{[citation needed]}
• the Port of Los Angeles Long Wharf, California State Historic Landmark #881^{[citation needed]}
• In astronomy, NGC 881 is an Sc type galaxy in the constellation Cetus.^[2]
• A bilingual play on words when text chatting in Mandarin Chinese or bilingually Mandarin Chinese and English. "881" is pronounced ba ba yi in Mandarin, and thus puns on "bye-bye." Probably an elaboration of the similar pun on "88" (ba-ba). See 88 (number).^{[citation needed]}
• The international telephone dialing code for the Global Mobile Satellite System^{[citation needed]}
• A musical comedy-drama film.