$1 primarily refers banknotes, bills or coins, including: Currency Australian one dollar coin, which replaced the one dollar note Loonie, which replaced the one dollar bill in Canada United States one-dollar bill, a denomination of United States currency Dollar coin (United States), a metal coin New Zealand one-dollar coin, which replaced the one dollar note Dollar (Hong Kong coin), coin of the Hong Kong dollar The one-dollar banknotes of Zimbabwe Other currencies with $1 banknotes, bills or coins are: Dollars Bahamian dollar Barbadian dollar Belize dollar Bermudian dollar Brunei dollar Cayman Islands dollar Cook Islands dollar East Caribbean dollar Fijian dollar Guyanese dollar Jamaican dollar Liberian dollar Namibian dollar Samoan tālā Singapore dollar Solomon Islands dollar Surinamese dollar New Taiwan dollar Trinidad and Tobago dollar Tuvaluan dollar Pesos Argentine peso Chilean peso Cuban peso Dominican peso Mexican peso Uruguayan peso Other currencies Brazilian real Cape Verdean escudo Nicaraguan córdoba Tongan paanga Other uses $1, a formal parameter in some programming languages One Dollar (TV series), American mystery thriller drama series that premiered in 2018 See also Dollar sign $, a symbol primarily used to indicate the various peso and dollar units of currency around the world Dollar, the name of several currencies Peso, the name of the monetary unit of Spain and several former Spanish colonies