Visas are not required for visits of up to 90 days by nationals from Andorra, Argentina, Armenia, Australia, Austria, Bahamas, Barbados, Belgium, Belize, Bolivia, Brazil, Bulgaria, Canada, Chile, Colombia, Costa Rica, Croatia, Cyprus, Czech Republic, Denmark, Ecuador, El Salvador, Finland, France, Germany, Greece, Guatemala, Guyana, Honduras, Hong Kong, Hungary, Iceland, Ireland, Israel, Italy, Jamaica, Japan, Latvia, Liechtenstein, Lithuania, Luxembourg, Macau, Malaysia, Malta, Mexico, Monaco, New Zealand, Nicaragua, Netherlands, Norway, Panama, Paraguay, Peru, Poland, Portugal, Romania, Russia, San Marino, Serbia, Seychelles, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sweden, Switzerland, Trinidad and Tobago, Turkey, United Kingdom, United States, Uruguay and Venezuela.
Everyone else will need to find an embassy or consulate and get a visa. Visas cost about US$42.
Uruguay Ministry of Interior
Uruguay embassies worldwide