A big tent party, or catch-all party, is a political party having members covering a broad spectrum of beliefs. This is in contrast to other kinds of parties, which defend a determined ideology, seek voters who adhere to that ideology, and attempt to convince people towards it.

Following the 2018 Armenian parliamentary election, the My Step Alliance rose to power on an anti-corruption and pro-democracy platform. The alliance has been described as maintaining a big tent ideology, as the alliance did not support any one particular political position. Instead, it focused on strengthening Armenia's civil society and economic development.

The Liberal Party of Australia and its predecessors originated as an alliance of liberals and conservatives in opposition to the Australian Labor Party, beginning with the Commonwealth Liberal Party in 1909. This ideological distinction has endured to the present day, with the modern Liberal Party frequently described as a "broad church", a term popularised by former leader and Prime Minister John Howard. In this context, "broad church" is largely synonymous with "big tent". In the 21st century, the party is often characterised as having a "small-l liberal" wing and a conservative wing, which frequently come into conflict with each other. The party has historically found strong support primarily from the middle-class, though it has in recent decades appealed to socially conservative working-class voters.

From its foundation the Justicialist Party has been a Peronist catch-all party, which focuses on the figure of Juan Perón and his wife Eva. Since Nestor Kirchner took the presidency in 2003, the party is considered as part of center-left coalition. It has divided into left-wing and right-wing factions, with left-wing populist Kirchnerists now dominating the party. Despite this, the right-wing faction still exists.

Juntos por el Cambio is an Argentine big tent political coalition. It was created in 2015 as Cambiemos. It is composed of Republican Proposal (centre-right), Civic Coalition ARI (centre) and Radical Civic Union (centre), with common goals to oppose Peronist parties. It is considered as part of center-right coalition.

In Bangladesh Awami League's Grand Alliance (Bangladesh) and BNP's 20 Party Alliance forms coalition with a wide range of parties, thus being catch all parties.

In Brazil, the Centrão (lit. 'big centre') is a term for a large bloc of political parties that do not have a specific or consistent ideological orientation, and focus on negotiating support for the government in exchange for positions, resources, and political influence. These parties tend to form the parliamentary base of different administrations, shifting positions as needed, and play a decisive role in forming majorities in the National Congress. The Brazilian Democratic Movement (MDB) is one of the oldest and most notable "Centrão" and Big Tent parties in Brazil; despite being Brazil's largest party, both in number of members and number of officials elected, it has never elected a President, but has used its position as the largest party as a "bargaining chip" for privileges and advantages. MDB was founded in 1965 at the start of the Brazilian military dictatorship as part of an enforced two-party system by the dictatorship, in which the only allowed parties were National Renewal Alliance Party (ARENA), a catch-all party representing the interests of the dictatorship, and MDB, formed to represent a wide-range moderate and less radical opposition to the dictatorship, without a clear program except the democratization of the country.

Brazil also has a number of minor parties known as "Rental Parties [pt]" (Portuguese: Partido de Aluguel), or "dwarf parties" (Portuguese: Partidos Nanicos), that generally have a "catch-all" alignment, with no electoral base of their own, existing primarily to negotiate political support, access to resources, or advertising time.