Grammatiko (Greek: Γραμματικό), also Grammatikos, other forms: Gramatiko or Gramatikos, older forms: Grammatikon or Gramatikon is a Greek village in east Attica, approximately 40 km (25 miles) northeast of Athens, and north of Marathon and Nea Makri. Grammatiko is linked with a road linking Marathon and Varnavas as well as Kapandriti and with GR-1/E75 (Athens - Lamia - Thessaloniki).
The population are a mixture of urban and rural.
Grammatiko is situated in a hilly and mountainous setting filled with grasslands, some pine forests, rocks and groves and some farmlands. Part of the municipality are forested but mainly with short and medium-sized trees including pine, spruce and others, forest and rural roads are around Grammatiko. Much of the community are depopulated. Mountains overlook the South Euboean Gulf. One of the hilltops lies to the southeast and around Grammatiko, taller mountains dominate the southwest along with some forests. The residential buildings goes from the valley up to the hills. The South Euboean Gulf or the Euboic Sea lies about 2.5 km to the northeast.
It is also the site where some wreckage from Helios Airways Flight 522 is reported to have fallen on August 14, 2005 in the hills northeast of the communal centre and smoke was seen by local residents.
Grammatiko has a school, a lyceum, a gymnasia, banks, churches, a post office, beaches and squares (plateies) including Marathonas Square.
Grammatiko, Satellite image