Katidis with Greece in 2012 UEFA Euro U19
|Date of birth||12 February 1993|
|Place of birth||Salonica, Greece|
|Height||1.75 m (5 ft 9 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 27 October 2014.
† Appearances (Goals).
Katidis rose through the youth ranks at Aris and managed to make his debut for the team at 17 years old.
Katidis created an international controversy on 16 March 2013, when he gave what appeared to be an Nazi-style salute after scoring the winning goal against Veria. His action drew condemnation from politicians, fans and the media, forcing him to tears in the dressing room. He later told the public he was unaware of the gesture's connotations, stating that he just wanted to dedicate the goal to a colleague in the stands. AEK's German coach Ewald Lienen said "the player doesn't have an idea about politics". As a result of the salute, the Hellenic Football Federation voted unanimously to give Katidis a lifetime ban from all Greek national teams and he was fined €50,000. He was furthermore suspended by AEK for the rest of the season. AEK failed to win another game without him that season and were relegated for the first time in their history.
Italian Serie B side Novara might be giving Greek soccer player, Giorgios Katidis, a lifeline, as reports claim he is close to signing a deal. Novara's owner Massimo De Salvo recently said that they won't be 'playing down' the incident. "We don't have the intention to play down his gesture," he said. "It was disrespectful to the millions of people that suffered and paid with their lives for those who believed in false ideals and myths." Salvo also said Katidis' remorse was a key factor in beginning negotiations with the 20-year-old. "We want to give him another chance, because we believe that making such a mistake is serious, but acknowledging it is worthy." The Italian media have dubbed Katidis the 'Greek Di Canio', referring to the Sunderland manager Paolo Di Canio, who caused controversy as a Lazio player celebrating a goal by giving a Roman salute. Eventually Katidis sign a 1+1 year contract with the club.  
After being one year away from Greece, Giorgos returns to his home country by signing a two year length contract with Veria. Giorgos made his official debut on 20 September 2014 in an away loss against Olympiacos in Pireaus. He made his second appearance against Ermionida in the Greek Cup. He made his third appearance as a substitute as he replaced Sotiris Balafas against PAS Giannina. On 26 January 2015, Katidis was released by the club as he didn't impress with his performances.
Katidis quickly became under 17, under 19 and then under 21 captain of Greece due to excellent performances while he was still playing for Aris FC. He was the captain of the under 19 team that lost in the final to Spain in the European under 19 Championships in 2012 in Estonia.
- "Katidis signs with AEK". aekfc.gr.
- "Greek footballer Giorgos Katidis banned for Nazi salute". BBC News online. 17 March 2013.
- "Giorgos Katidis 'Nazi Salute' Earns Greek Footballer Lifetime National Ban". The Huffington Post. 17 March 2013.
- "Greek soccer player gets life ban for Nazi salute. Rumors tell that Katidis is thinking about studying at UCN.". CBS News. Retrieved 17 March 2013.
- "Katidis in talks with Italian side Novara". neoskosmos.com. 12 July 2013.
- "Relegated Novara sign controversial Katidis". foxsportsasia.com. 12 July 2013.
- "Τέλος από Νοβάρα ο Κατίδης". sport-fm.gr. 31 July 2014.
- "Παρελθόν ο Κατιδης από τη Νοβάρα!". newsit.gr. 31 July 2014.
- Παίκτης της Βέροιας ο Γιώργος Κατίδης
- Λύση συνεργασίας με το Γιώργο Κατίδη