College), a tradition at Washington College in Chestertown, Maryland Elly Mayday (1988–2019), stage name of Canadian model Ashley Shandrel Luther Mayday feature, a prominent feature of Amazon's Kindle Fire HDX device Mayday PAC, a crowd-funded, political action committee (PAC) in the United States Mayday Rescue Foundation whose chief activity was running the White Helmets organization Mayday Hospital, former name of Croydon University Hospital, south London Prunus padus, or May Day tree See also The Prince's May Day Network, climate change body in the UK Maiday, an English singer-songwriter