【Set (消歧义)】
Set、The Set、SET或SETS可能指以下其中一项：
==自然、科技、和数学==
===数学===
*集合 (数学)（Set (mathematics)），数学中集合论的研究对象。
*集合范畴（Category of sets）, 其对象和态射分别是集合和总函数的范畴
===电子和计算===
*Set (abstract data type)（Set (abstract data type)），计算科学中的一种数据类型，它是唯一值的集合
** Set (C++)，C++ 标准库中的集合实现
* Set (命令)，用于在Unix和Microsoft操作系统中设置环境变量值的命令
* Secure Electronic Transaction（Secure Electronic Transaction），一种应用于电子商务的安全通讯协定。
* 单电子晶体管（Single-electron transistor），在纳米电子学中放大电流的装置
* Single-ended triode，一种电子放大器
* Set!，方案编程语言中的编程语法
===生物与心理学===
* Set (psychology)（Set (psychology)）一组塑造感知或思想的期望
*sett（Set or sett），獾的巢穴
*Set：用小块茎或鳞茎代替种子，尤其是：
**马铃薯set
**洋葱set
* SET (基因)，参与细胞凋亡、转录和核小体组装的人类蛋白质基因
* Single Embryo Transfer，used in in vitro fertilization
===物理与化学===
* 黏合剂从非粘合到粘合的化学变化
** Set, 变成凝固；参见凝固
* 应力-能量张量（Stress–energy tensor），场论中的一个物理量
* 单电子转移（Single electron transfer）
===其他科学技术用途===
* Saw set，设置锯齿的过程，使每个锯齿都突出到刀片的侧面
* Scalar expectancy theory，控制由时间控制的行为的过程模型
* 科学、工程与技术（Science, Engineering & Technology），例如：The Science, Engineering & Technology Student of the Year Awards
* 排版（Setting (typesetting)），排版出版物以供印刷或展示的行为
* Simulated Emergency Test（Simulated Emergency Test），业余无线电训练练习
* 测验中的软体工程师（Software Engineer in Test），一些软体公司的品质保证职位
* Strategic Energy Technologies Plan of the European Union
* Suzuki SET，SUZUKI摩托车排气调校
==艺术与娱乐==
===舞蹈===
*Set，方块舞的基本方阵
*Set，Scottish country dance中基本的纵向、正方形或三角形的阵型
*Set，苏格兰、英国和爱尔兰的Céilidh中不止一对夫妇的基本组成
===电影、电视与影院===
*Set (film and TV scenery)
*布景
*Set construction（Set construction），戏剧、电影、电视制作和游戏制作的场景建设
*The Set (film)
*The Set (TV series)，澳洲电视音乐节目
* 三立电视（Sanlih Entertainment Television），台湾的电视台
* Sony Entertainment Television（Sony Entertainment Television），印地语电视频道
===音乐===
*DJ set or DJ mix, a musical performance by a DJ
*Set theory (music), dealing with concepts for categorizing musical objects and describing their relationships
*Set (music), a collection of discrete entities, for example pitch sets, duration sets, and timbre sets
*Set (Thompson Twins album)
*Set (Alex Chilton album)
*Set list, a list of songs to be played during musical performances
===Other arts===
*Set (video game), a group of items that adds specific bonuses
==Businesses and organizations==
* Societatea Pentru Exploatări Tehnice, a Romanian aeronautics company of the 1920s to 1940s
* South Eastern Trains, former train operator England
* Stock Exchange of Thailand, the national stock exchange of Thailand
* SET Index, an index for the Stock Exchange of Thailand
* Study of Exceptional Talent, a program for gifted students
* Sydney Electric Train Society, an electric train preservation society in Sydney, Australia
== Religion ==
*Set (deity) or Seth, an ancient Egyptian deity
*Set or Seth, a Biblical character, a son of Adam and Eve
==Sport and games==
*Set (darts), a sequence of games
*Set (card game)
*Set (cards), two or more cards of the same rank
*Set (dominoes), the first play in dominoes
*Set, a signal used in American football
*The set, a pitching position in baseball
*Set, a unit of play in tennis
*Set, a team's second contact with the ball in volleyball
*Set, a group of repetitions in weight training
*Three of a kind (poker), a type of poker hand
==Other uses==
*Set and setting, coined by Timothy Leary to describe the mindset and location of hallucinogenic experiences
*Seṭ and aniṭ roots, in Sanskrit grammar
*Set (river), a river in northeastern Spain
*Selective Employment Tax, a tax in the United Kingdom from 1966 to 1973
*Senate Electoral Tribunal, decides election protests for the Senate of the Philippines
*Set, slang term for a subgroup within a gang