- 大年三十 dàniánsānshí Chinese New Year's EveThe last day of the lunar year, occurring on the 30th day of the 12th lunar month; also called [[年三十|年三十|nian2 san1 shi2]].
- 三十六 sānshíliù thirty-six
- 三十八 sānshíbā thirty-eightthe number thirty-eight
- 三十六计 sānshíliùjì Thirty-Six StratagemsThe collective name for a famous set of Chinese military and political tactics; also used to mean all possible schemes or a wide variety of tricks. The final and most well-known tactic in this set is [[走为上计|走為上計|zou3 wei2 shang4 ji4]].
- 三十而立 sānshí'érlì established at thirty(idiom) Thirty years of age as the time when one should be established and independent in society. Originally from the [[论语|論語|lun2 yu3]] (Analects).
- 三十四 sānshísì thirty-fourthe number thirty-four; 34
- 三十三 sānshísān thirty-threethe number thirty-three; 33
- 三十九 sānshíjiǔ thirty-ninethe number thirty-nine
- 三十一 sānshíyī thirty-onethe number thirty-one
- 三十七 sānshíqī thirty-seven
- 第三十 dìsānshí thirtieththe ordinal number thirty
- 三十六行 sānshíliùháng all walks of lifeall sorts of occupations; every conceivable line of work
- 三十儿 sānshír thirtieth day of a monthThe thirtieth day of a month in the lunar calendar; often used to refer specifically to New Year's Eve, the final day of the twelfth lunar month.
- 三十六天罡 sānshíliùtiāngāng Thirty-Six Heavenly SpiritsThe thirty-six deities or stars of the Big Dipper in Taoism; also used in literature to represent the thirty-six leaders of the Liangshan Marsh in the novel "Water Margin"
- 三十六字母 sānshíliùzìmǔ thirty-six initial consonantsA set of thirty-six representative characters used to denote the initial consonant sounds of Chinese during the Tang and Song dynasties.
- 三十二相 sānshí'èrxiàng the thirty-two characteristics of Buddhathe thirty-two physical signs or characteristics of the Buddha
- 三十六计，走为上策 sānshíliùjìzǒuwéishàngcè of the thirty-six stratagems, the best option is to fleeUsed when a situation has become hopeless or unmanageable to suggest that leaving or running away is the best course of action; also written as [[三十六计，走为上计|三十六計，走為上計|san1 shi2 liu4 ji4 zou3 wei2 shang4 ji4]].
- 三十六计，走为上计 sānshíliùjìzǒuwéishàngjì fleeing is the best optionThe best thing to do when a situation is hopeless is to leave; of the thirty-six stratagems, running away is the best one.
- 三十二分音符 sānshí'èrfēnyīnfú thirty-second notedemisemiquaver; a musical note played for one thirty-second of the duration of a whole note
- 三十年河东，三十年河西 sānshíniánhédōngsānshíniánhéxī change is the only constant(proverb) the river flows thirty years to the east and thirty years to the west; used to describe the ever-changing nature of the world where fortunes rise and fall over time
- 三十二位元 sānshí'èrwèiyuán 32-bit32-bit architecture or data in computing
- 三十三天 sānshísāntiān thirty-three daysA period of thirty-three days
- 年三十 niánsānshí Lunar New Year's EveNew Year's Eve in the lunar calendar; the last day of the year, regardless of whether it falls on the 29th or 30th of the 12th month; also called [[大年三十|大年三十|da4 nian2 san1 shi2]]
- 三十八度线 sānshíbādùxiàn 38th parallelThe line of latitude 38 degrees north, which served as the dividing line between the US and Soviet occupation zones in Korea after World War II and preceded the current Demilitarized Zone (DMZ)
- 三一三十一 sānyīsānshíyī to divide into three equal partsTo divide something into three equal parts; by extension, to share or split something fairly among several people.
