A club is an association of people united by a common interest or goal. A service club, for example, exists for voluntary or charitable activities. There are clubs devoted to hobbies and sports, social activities clubs, political and religious clubs, and so forth.

Blackballing is a rejection in a traditional form of secret ballot, where a white ball or ballot constitutes a vote in support and a black ball signifies opposition. The system is typically used where an organization's rules provide that one or two objections, rather than an at-least-50% share of votes, are sufficient to defeat a proposition. Since the seventeenth century, these rules have commonly applied to elections to membership of many gentlemen's clubs and similar institutions such as Masonic lodges and fraternities.

The Calgary Petroleum Club is a private social club in Calgary, Alberta. The club was founded in 1948 as a gentlemen's club catered to executives in the petroleum industry, but since 1989 has been mixed-sex. Membership in the Calgary Petroleum Club has been described as the "pinnacle of social and corporate achievement in a one-industry town."

A country club is a privately owned club, often with a membership quota and admittance by invitation or sponsorship, that generally offers both a variety of recreational sports and facilities for dining and entertaining. Typical athletic offerings are golf, tennis, and swimming. Where golf is the principal or sole sporting activity, and especially outside of the United States, it is common for a country club to be referred to simply as a golf club.

Hack Club is a global nonprofit network of high school computer hackers, makers and coders. Founded in 2014 by Zach Latta and Jonathan Leung, it now includes 400 high school clubs and 14,000 students. It has been featured on the TODAY Show, and profiled in the Wall Street Journal and many other publications.
A social club may be a group of people or the place where they meet, generally formed around a common interest, occupation, or activity. Examples include: book discussion clubs, chess clubs, anime clubs, country clubs, charity work, criminal headquarters, final club, fishing club, gaming club, gentlemen's clubs, hunting clubs, military officers' clubs, politics clubs, science clubs, university clubs, Christian Fellowships. This article covers only three distinct types of social clubs: the historic gentlemen's clubs, the modern activities clubs, and an introduction to fraternities and sororities. This article does not cover a variety of other types of clubs having some social characteristics.

A subscription library is a library that is financed by private funds either from membership fees or endowments. Unlike a public library, access is often restricted to members, but access rights can also be given to non-members, such as students.

A subscription library is a library that is financed by private funds either from membership fees or endowments. Unlike a public library, access is often restricted to members, but access rights can also be given to non-members, such as students.
