21 July – The 6.6 MwAegean Sea earthquake shook the area with a maximum Mercalli intensity of VII (Very strong), killing two and injuring 480.
September
9 September - The Greek FIBA team reaches the quarterfinals of the FIBA EuroBasket 2017, losing to Russia 69-74 in the process.
November
The Greek association football team reaches the playoffs of FIFA World Cup qualification, losing to Croatia 4-1 on aggregate in the process.
15 November – In one of the greatest disasters in the area in decades, flash floods hit Western Attica, particularly the Athens suburb of Mandra, killing twenty-three.