Tassos Telloglou is a Greek investigative journalist. He has won the ‘Prosopa’ Award eight times for his television work, as well as the Botsis Foundation Award.
He was part of the founding team of the investigative journalism website Insidestory.gr in 2016, and in 2022–23 he and Eliza Triantafyllou investigated the use of the illegal software Predator in Greece.
His career spans decades. Tassos studied law at the University of Athens. In 1986, he began working for the newspaper I Proti, and in 1989, he joined the editorial staff of Kathimerini, while also joining the political department of Mega Channel. From 1990 to 1997, he was a correspondent in Germany. He has filmed and presented over 250 long-form television reports.
In 1998, he, Alexis Papachelas and Pavlos Tsimas created the show The Black Box (Mega). In 2004, he became editor-in-chief of The Files. From 2007 to 2013, he co-presented "The New Files" with Alexis Papachelas and Sofia Papaioannou, and since 2016, he has co-presented "Stories" with Alexis Papachelas, Sia Kossioni, and Pavlos Tsimas. From 2020 to 2021, he presented the show Special Report with Antonis Fourlis on Antenna.
