A women's Twenty20 International (WT20I) is an international cricket match between two teams, each having WT20I status, as determined by the International Cricket Council (ICC). In a women's Twenty20 match, the two teams play a single innings, each of which is restricted to a maximum of 20 overs. The Twenty20 format was originally introduced by the England and Wales Cricket Board for the men's county cricket competition with the first matches contested on 13 June 2003 between the English counties in the Twenty20 Cup. The first women's Twenty20 International match took place on 5 August 2004 when New Zealand defeated England by nine runs at the County Cricket Ground in Hove. This match was held six months before the first men's Twenty20 International, contested between Australia and New Zealand in February 2005.
A five-wicket haul (also known as a "five-for" or "fifer") refers to a bowler taking five or more wickets in a single innings. This is regarded as a notable achievement, especially in the Twenty20 format, as bowlers can bowl no more than four overs in an innings. The first five-wicket haul in a WT20I match was taken by New Zealand's Amy Satterthwaite against England on 16 August 2007. Satterthwaite took six wickets for 17 runs, the best bowling figures in an innings by a player in the international women's format and the sole six-wicket haul. The most recent five-wicket haul was taken by Shabnim Ismail of South Africa against India in the third match of the five match series at the Wanderers Stadium in Johannesburg. At 30 years of age, Fletcher is the oldest player to take five wickets in an innings while Shaquana Quintyne, also of the West Indies, is the youngest at 17. Taking five wickets for just eight runs, the most economical five-wicket haul with an economy rate of 2.00 was taken by Suné Luus of South Africa against Ireland during the 2016 ICC Women's World Twenty20 at Chepauk Stadium in Chennai. Julie Hunter of Australia took the least economical five-wicket haul, bowling with an economy rate of 6.60 against the West Indies in October 2012. Hunter's compatriot Molly Strano took 5 wickets for 10 runs against New Zealand in February 2017, the only occurrence which did not result in a victory to the team taking the five-wicket haul.
As of 18 February 2018 Anisa Mohammed of the West Indies is the only bowler to have achieved the feat twice. Five-wicket hauls have been taken by players from six of the ten teams that hold Twenty20 International status. Players from Bangladesh, Ireland, Pakistan, Sri Lanka and the Netherlands, the only other nation to have played a WT20I, have yet to achieve the milestone. West Indies leads the list with five, followed by Australia, England, South Africa and India with two five-wicket hauls each while New Zealand follows the list with a single fifer. Five-wicket hauls have been taken at nine different grounds, with Kensington Oval in Bridgetown, Barbados, leading the list with three followed by R. Premadasa Stadium in Colombo, Sri Lanka and the County Ground in Taunton, England, with two each.
, 14 five-wicket hauls have been taken by 13 different players from 396 WT20I matches.