Aristomenis
{{Infobox Greek Dimos
|name = Aristomenis
|name_local = {{langx|el|Αριστομένης}}
|type = municipal unit
|image_map = DE Aristomenous.svg
|map_caption = Location within the regional unit
|periph = Peloponnese
|periphunit = Messenia
|municipality = Messini
|pop_municunit = 1696
|pop_community = 267
|population_as_of = 2021
|area_municunit = 90.678
|elevation =
|coordinates = {{coord|37|05|N|21|50|E|format=dms|display=inline,title}}
|postal_code =
|area_code =
|licence = ΚΜ
|website =
|image_skyline =
|caption_skyline =
}}
Aristomenis ({{langx|el|Αριστομένης}}) is a village and a former municipality in Messenia, Peloponnese, Greece. Since the 2011 local government reform it has been part of the municipality of Messini, of which it is a municipal unit.{{Cite web|url=http://www.et.gr/idocs-nph/search/pdfViewerForm.html?args=5C7QrtC22wGYK2xFpSwMnXdtvSoClrL81-32jgAMSfbnMRVjyfnPUeJInJ48_97uHrMts-zFzeyCiBSQOpYnT00MHhcXFRTsb2fGphpq4MKX2ZkaHobySNnvZCNHXvYVvlf80XevW0Q.|title=ΦΕΚ B 1292/2010, Kallikratis reform municipalities|language=el|publisher=Government Gazette}} The municipal unit has an area of 90.678 km2.{{cite web|url=http://dlib.statistics.gr/Book/GRESYE_02_0101_00098%20.pdf |publisher=National Statistical Service of Greece |title=Population & housing census 2001 (incl. area and average elevation) |language=el |url-status=dead |archiveurl=https://web.archive.org/web/20150921212047/http://dlib.statistics.gr/Book/GRESYE_02_0101_00098%20.pdf |archivedate=2015-09-21 }} Its population was 1,696 in 2021.