Venetiko
{{Short description|Small uninhabited Greek island}}
{{Infobox islands
|name = Venetiko
|local_name = Βενέτικο
|image_name =
|image_caption =
|pushpin_map = Greece
|pushpin_map_width = 220
|pushpin_map_caption = Location of Venetiko island
|coordinates = {{Coord|display=inline,title|36|41|45.43|N|21|53|15.04|E|scale:100000}}
|map_image =
|map_caption =
|location = Mediterranean Sea
|archipelago = Messenian Oinousses
|total_islands =
|area_km2 =
|highest_mount =
|elevation_m =
|country = Greece
|country_admin_divisions_title = Region
|country_admin_divisions = Peloponnese
|country_admin_divisions_title_1 = Regional unit
|country_admin_divisions_1 = Messenia
|country_admin_divisions_title_2 = Municipality
|country_admin_divisions_2 =
|population = 0
|population_as_of = 2020
|density_km2 = 0
|postal_code =
|area_code =
|registration_plate =
|website =
}}
Venetiko ({{langx|el|Βενέτικο}}), is a small uninhabited Greek island off the southern coast of the Peloponnese, south of the Cape Akritas. It belongs to the cluster of the Messenian Oinousses. It is administratively part of the municipality of Pylos-Nestor, in Messenia.
During the ancient times, it was called Theganoussa ({{langx|grc|Θηγανοῦσσά}}) and it is mentioned by the Pomponius Mela,[https://topostext.org/work/145#2.110 Pomponius Mela, Chorographia, §2.110] Pliny the Elder,[https://topostext.org/work/148#4.19.4 Pliny the Elder, Natural History, §4.19.4] Pausanias[https://www.perseus.tufts.edu/hopper/text?doc=urn:cts:greekLit:tlg0525.tlg001.perseus-grc1:4.34.12 Pausanias, Description of Greece, §4.34.12] and Ptolemaeus.[https://topostext.org/work/209#3.14.44 Ptolemaeus, Geography, §3.14.44]
Though Pausanias calls it an uninhabited island, archaeological evidence suggests that it was once occupied.[https://www.gtp.gr/LocInfo.asp?InfoId=49&PrimeCode=EGRPME0a&PrimeLevel=6 MESSINIA]
It is included in the Natura 2000.[https://web.archive.org/web/20111123171004/http://www.minenv.gr/1/12/121/12103/viotopoi/g2550003.html Natura 2000]