Brendan Richard Lewis is an Irish author and blogger who defines himself as a "technomad language hacker". He is best known for his website Fluent in 3 Months, on which he documents personal attempts to learn languages within short time periods, typically three months.
Lewis is the author of the book Fluent in 3 Months (2014) as well as a language courses series titled Language Hacking, including Spanish, French, German, and Italian.
Born in Ireland, Lewis has described himself mediocre in languages at school, getting a C in German and just managing to pass his Irish language exams. He graduated in electronic engineering from University College Dublin and then spent time struggling to learn Spanish in Spain where it took him over a year to learn the language. His frustration with conventional methods led him to take a different approach to language learning, as described in his book and website Fluent in 3 Months.