
Polyamory is the practice of, or desire for, intimate relationships with more than one partner, with the informed consent of all partners involved. People who identify as polyamorous may believe in open relationships with a conscious management of jealousy and reject the view that sexual and relational exclusivity are necessary for deep, committed, long-term, loving relationships. Others prefer to restrict their sexual activity to only members of the group, a closed polyamorous relationship which is usually referred to as polyfidelity.

Polyamory is a relationship orientation that is practiced by some people in the United States. Polyamory constitutes 4 to 5 percent of people living in the United States. This equates to about 17.5 million people. 20 percent of the US population has practiced it at some point of their life in the United States. This is almost 70 million people. There is a strong belief that polyamory is severely undercounted. It was once thought to be a lifestyle of white liberals, but in actuality it is a cross section of America. In a study, polyamorous couples tend to identify as bisexual and pan sexual.

Paxus Calta, born Earl Schuyler "Sky" Flansburgh, is an American political activist, communitarian and writer. He has been involved with the anti-nuclear movement and is a member of the Twin Oaks Community.

The Center for Sex Positive Culture (CSPC), formerly known as The Wet Spot, is a non-profit, membership-based organization located in Seattle, Washington. It organizes events and provides space for several different sex-positive subcultures, notably BDSM, swinging, and polyamory groups. CSPC welcomes people of all sexual identities and seeks to encompass all consensual sexual practices. The Center is a 501(c)(7) recreational club; its sister organization, the Foundation for Sex Positive Culture is a 501(c)(3) charitable/educational organization.

Catherine Dorion is a Quebecer politician, who was elected to the National Assembly of Quebec in the 2018 provincial election. She represents the electoral district of Taschereau as a member of Québec solidaire (QS). Dorion is aligned with Option nationale, a pro-independence faction that is a "collective" within QS.

The Ethical Slut: A Guide to Infinite Sexual Possibilities is an English language non-fiction book by Dossie Easton and Janet Hardy.
Family: the web series is an episodic 2008 web series created by actress and filmmaker Terisa Greenan, based loosely on her own life of polyamory with her two male partners. Greenan wrote and directed the show, and acted in a small supporting role. Some episodes were co-written by Matt Bullen.

A ménage à trois is a domestic arrangement with three people sharing romantic or sexual relations with one another, and typically dwelling together. The phrase is a loan from French meaning "household of three". A form of polyamory, contemporary arrangements are sometimes identified as a throuple, thruple, or triad.

More Than Two: A Practical Guide to Ethical Polyamory is a non-fiction book about consensual non-monogamous relationships, written by Franklin Veaux and Eve Rickert. The foreword is written by Janet Hardy, co-author of The Ethical Slut. The book shares the same name as, but no content with, Veaux's website MoreThanTwo.com, which he launched in 1997 as a resource about polyamory.

Polyamory is the practice of, or desire for, intimate relationships with more than one partner, with the informed consent of all partners involved. People who identify as polyamorous may believe in open relationships with a conscious management of jealousy and reject the view that sexual and relational exclusivity are necessary for deep, committed, long-term, loving relationships. Others prefer to restrict their sexual activity to only members of the group, a closed polyamorous relationship which is usually referred to as polyfidelity.

Kim TallBear is a Sisseton Wahpeton Oyate professor at the University of Alberta, specializing in racial politics in science. Holding the first ever Canada Research Chair in Indigenous Peoples, Technoscience and Environment, TallBear has published on DNA testing, race science and Indigenous identities, as well as on polyamory as a decolonization practice.

Three of Hearts: A Postmodern Family is a 2004 documentary film directed by Susan Kaplan and stars Sam Cagnina, Steven Margolin, and Samantha Singh. The film spans several years of a trinogamous relationship between two men and one woman.

The Transcending Boundaries Conference (TBC) is a Northeast American convention for bisexual + other middle sexualitites, genderqueer, transgender, intersex, polyamorous and other people who do fall outside strict binaries as well as their family, friends, and straight allies.

Celeste (Celestia) West was an American librarian and lesbian author, known for her alternative viewpoints in librarianship and her authorship of books about lesbian sex and polyfidelity. She herself was polyamorous.

Morning Glory Zell-Ravenheart, born as Diana Moore, subsequently known as Morning Glory Ferns, Morning Glory Zell and briefly Morning G'Zell, was an American community leader, author, and lecturer in Neopaganism, as well as a priestess of the Church of All Worlds. An advocate of polyamory, she is credited with coining the word. With her husband Oberon Zell-Ravenheart, she designed deity images.