The Sunday Tribune was an Irish Sunday broadsheet newspaper published by Tribune Newspapers plc. It was founded in 1980 as a tabloid, before converting to broadsheet in 1981. It closed in 1982 and relaunched in 1983. It reverted to tabloid in 2010 and entered receivership in February 2011 after which it ceased to trade. Over the years of its publication it was edited by Conor Brady, Vincent Browne, Peter Murtagh, Matt Cooper, Paddy Murray and Nóirín Hegarty.

The newspaper was founded in 1980 by John Mulcahy as a tabloid with Conor Brady (later editor of The Irish Times) as its first editor. The format changed to broadsheet with the addition of a colour supplement magazine after the first year. It was moderately successful but its growing financial stability (it had not yet made a profit but was moving in that direction) was undermined when its then owner, Hugh McLaughlin, launched the financially misjudged downmarket tabloid Daily News in 1982. The News proved to be a publishing disaster, with poor quality printing, bad distribution, and misjudged content, and pulled its sister paper, the Tribune, down with it within weeks. The Tribune went into receivership.

The title was bought by Vincent Browne, who relaunched it in 1983 and became its editor. One of the shareholders was Tony Ryan.

The paper became one of Ireland's most successful newspapers in the 1980s, eating into the market of The Sunday Press, which like other Press titles was hæmorrhaging readers through underfunding, an aging market and poor management decisions. Replicating McLoughlin's mistake of a decade earlier, against advice Browne launched a new sister paper, the Dublin Tribune, which collapsed – pulling the Sunday Tribune down with it.

It had a circulation of 65,717 and readership of 177,000 (5% of market) from Jan–June 2008.

The Dublin Tribune, though a commercial failure, was a breeding ground for a number of talented young journalists under the direction of editors Michael Hand and Rory Godson. These included Patricia Deevy, Diarmuid Doyle, Ursula Halligan, Nicola Byrne, Ronan Price, Richard Balls, Paul Howard, Colm Murphy, Brendan Fanning, Conn O Midheach, Rory Kerr, Ryle Nugent and Ed O'Loughlin who was on the shortlist for the Booker Prize for his novel Not Untrue And Not Unkind. Susan McKay joined the staff fulltime in 1992 first as social affairs correspondent and then as Northern Ireland editor.

The Sunday Tribune was saved from bankruptcy by Tony O'Reilly's Independent News and Media (then called Independent Newspapers plc), which acquired a 29.9 per cent stake in the company. Even before the investment the relationship between Browne and the board of the company had been contentious. In the aftermath of the Dublin Tribune debacle Browne was sacked as editor.

Browne was succeeded as editor by Peter Murtagh, a Dublin-born journalist formerly with The Irish Times who moved to London in 1985 and was news editor at The Guardian. Appointed Sunday Tribune editor in 1994, Murtagh had limited success, seeing early circulation growth dissipate and the paper starved of resources. He resigned after just over two years, telling journalists he could not secure sufficient investment from the Board. Later, he rejoined The Irish Times