Constantinos Tsakiris (ÃÂÃÂýÃÂÃÂñýÃÂïýÿàäÃÂñúïÃÂ÷ÃÂ; born ) is a Greek shipowner and a banker in the United States.
He was owner of the Super League side Panionios after acquiring 85% of the club in the summer of 2006. One of his first actions was to alter the name of Panionios to their original name Panionios GSS (which stands for "àñýùÃÂýùÿàÃÂàüýìÃÂÃÂùúÿàãÃÂûûÿóÿàãüÃÂÃÂý÷ÃÂ" or Panionios Gymnastic Club of Smyrna) and hire Ewald Lienen as first team manager. He would watch Panionios matches from gate 3 along with the "Panthers" â the oldest and most notorious fan club of Panionios. Constantinos Tsakiris is also the chairman and managing director of Paradise Navigation SA, a shipping management company established in Greece and founded back in 1968, as Navipower Compania Naviera SA, by the Tsakiris family, a traditional Greek ship-owning and operating family.
In 2007, he was on the successful bidding committee for Volos and Larissa to host the 17th Mediterranean Games to be held in 2013.