Tom Collins is a classic gin cocktail that has been around for more than a century. Made with gin, lemon juice, sugar, and soda water, this refreshing drink has become a staple in many bars. However, if you're not feeling the name Tom Collins, there are several synonyms you can use to order the same drink. Some popular options include gin fizz, lemon fizz, John Collins, and vodka Collins. While the ingredients and preparation remain the same, using a different name may make you feel more sophisticated, or allow you to show off your knowledge of bartending lingo.