Chad, Cuba, Iran, Iraq, Laos, Mali, Oman, Peru, Togo
There are no countries that have only 3 letters.
The only countries with three letters in their name are Fiji and Vanuatu.
BeninChileChinaEgyptGabonGhanaHaitiIndiaItalyJapanKenyaLibyaMaltaNauruNepalNigerPalauQatarSamoaSpainSudanSyriaTongaYemen
Croatia
No.
SUICIDE!
BarbadosBotswanaBulgariaCambodiaCameroonColombiaDjiboutiDominicaEthiopiaHondurasKiribatiMalaysiaMaldivesMongoliaPakistanParaguayPortugalScotlandSlovakiaSloveniaSri LankaSurinameTanzaniaThailandZimbabwe
None of the Scandinavian countries have a name with only three letters.
BrazilAngolaGambiaMalawiJordanBhutanCyprusRwandaZambiaNorwayRussiaPolandMonacoLatviaFranceGreeceBosniaGuyanaPanamaTuvaluBelizeCanadaMexicoSwedenGuineaTurkeyItalia ?Espana?
Installs - however this is eight letters long
Nauru, Nepal, and Niger are countries. They are the only countries that contain only 5 letters and begin with the letter N.