Brendan Richard Lewis[1] (born 1981/1982)[2] is an Irish author and blogger who defines himself as a "technomad language hacker".

[10] 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.

Most people take years to learn just the basics of a language because they do it so wrong, so of course a claim of “3 months” would sound arrogant to them.

[21]To date, Lewis has documented attempts to learn over 20 languages to varying degrees of fluency over short time periods—typically three months—some successful, some not.

[22] He publicly shares his experiences on his website with a combination of blog posts and YouTube video footage.

[8] He started recording his efforts in 2009 partly to prove it was possible to learn a language fluently in three months.

[24] Other research indicates that a realistic time to learn languages such as English or French, without immersion, is 8 months as a minimum, depending on a number of variables.

[26] After his 3-month mission, he expected to be able to: have comfortable conversations with locals about a wide range of topics, without a strong accent and with a good enough command of the language for expressing myself clearly in many social situations and understanding as much as possible.After 3 months, on 1 September 2009, Lewis stated that he had studied Czech for "two months" with a "casual part-time commitment" due to an increased workload to pay off a debt.

At the end of this project December 2009, Lewis stated that the mission had been a "partial success" with some Brazilians believing he was a native speaker for periods of up to 30 seconds.

At the end of the three-month project, Benny shared the results of the Goethe-Zertifikat C2: Zentrale Oberstufenprüfung examination.

[31] Lewis made attempts at learning both Japanese and Chinese to levels of fluency in the space of three months.