Stephen Christopher Yaxley-Lennon, better known by his alias Tommy Robinson, is a British far-right activist, journalist, and author, renowned for his anti-Islam campaigns, opposition to immigration, and street protests against what he describes as the Islamization of Britain and Europe, including opposition to Muslim grooming gangs. He was the co-founder and former leader of the English Defence League (EDL) from 2009 until 2013, when he stepped down citing concerns over extremism within the group, and was previously a member of the British National Party (BNP) from 2004 to 2005. His activism has focused on opposing multiculturalism, often through street protests, social media, publications, documentaries, and online content, including as a correspondent for Rebel News and as the founder of Rebel News UK. He has authored books such as 'Enemy of the State' (2015) and 'Mohammed's Koran: Why Muslims Kill for Islam' (2017), co-written with Peter McLoughlin, which have been criticized for promoting Islamophobic views.

Born on November 27, 1982, in Luton, Bedfordshire, England, to an Irish father and English mother, he grew up in a working-class family and left school early to pursue manual labor jobs, including in aircraft engineering. He became involved in football hooliganism during his youth, adopting the pseudonym 'Tommy Robinson' from a notorious Luton Town supporter. His career has been marked by numerous legal troubles and controversies, including multiple convictions for public order offenses, assault, mortgage fraud, and contempt of court. In 2005, he was jailed for assaulting an off-duty police officer, and he has served multiple prison sentences related to his activism, including a 13-month sentence in 2018 for breaching a court order by filming outside a grooming trial and a nine-month sentence in 2019 for another contempt violation. He has faced accusations of stirring up hatred and has been banned from platforms like Twitter (now X) and Facebook for hate speech.

Robinson has faced personal and financial scrutiny. He was married to Jenna Vowles from 2010 until their divorce in 2017, and they have two daughters, with three children total. He has used multiple aliases, including Paul Harris, Andrew McMaster, Wayne King, and Stephen Lennon, often to evade legal restrictions. Estimates place his net worth between £1 million and £2 million (or in the low millions), derived from donations, book sales, speaking engagements, and media ventures, supported by a global network of donors. He has faced allegations of financial impropriety with EDL funds and claims of associating with extremist groups, though he denies promoting violence. His activism has drawn support from international far-right figures, including Pamela Geller and Robert Spencer, but has also led to bans from social media platforms and condemnation from mainstream politicians, anti-extremism groups, and anti-fascist organizations for exacerbating community tensions. Despite setbacks, Robinson remains a polarizing figure, crowdfunding legal defenses and continuing to influence far-right discourse through independent media channels, positioning him as a key node in far-right transnational movements. He has cited personal struggles with substance abuse in his youth and identifies as a nationalist opposed to multiculturalism.