Carsten Jahn is a German lawyer born on September 30, 1971, in Riesa, Saxony, East Germany. He studied law at the University of Leipzig from 1992 to 1997, passing his first state examination in 1997 and his second in 2000, before being admitted to the bar in 2001. Jahn established his own law firm in Leipzig, specializing in criminal defense, particularly in cases involving hate speech, defamation, and political activism. He has gained prominence for representing far-right clients, including Lutz Bachmann, the founder of the Pegida movement, in multiple legal proceedings related to incitement and hate speech allegations. Jahn's legal work often intersects with Germany's strict laws on Volksverhetzung (incitement to hatred), and he has defended numerous individuals from the Alternative for Germany (AfD) party and other right-wing groups.

Jahn's career has been marked by controversy due to his choice of clients, leading to accusations of enabling extremist ideologies. He has been criticized by anti-fascist groups and media outlets for his role in high-profile cases, such as the defense of Pegida demonstrators and AfD politicians facing charges for inflammatory statements. Despite this, Jahn maintains that his work upholds the right to free speech and legal representation for all. In addition to his legal practice, Jahn has engaged in public commentary, occasionally appearing in media discussions on legal issues surrounding political expression. His professional network includes connections within far-right circles, though he positions himself as a neutral advocate. As of recent reports, he continues to operate his firm in Leipzig, handling a range of criminal cases beyond political ones.