Alalkomenes (Greek: Αλαλκομενές; before 1928: Μαμούρα Mamoura) is a village and a community in the municipality of Livadeia, Boeotia, central Greece. It is situated in a wide plain, 6 km northeast of Koroneia, 10 km east of Livadeia and 30 km west of Thebes. The community Alalkomenes consists of the villages Alalkomenes and Agios Athanasios. The population of the community was 116 in 2021.

Historical population

Year Pop. ±% p.a. 1835 127 —     1861 183 +1.41% 1879 126 −2.05% 1889 143 +1.27% 1896 186 +3.83% 1907 154 −1.70% 1920 253 +3.89% 1928 310 +2.57% 1940 476 +3.64%	Year Pop. ±% p.a. 1951 409 −1.37% 1961 435 +0.62% 1971 303 −3.55% 1981 296 −0.23% 1991 324 +0.91% 2001 191 −5.15% 2011 178 −0.70% 2021 116 −4.19%
Source: Censuses

In 1928 the village Mamoura was renamed Alalkomenes after the nearby ancient town of Alalcomenae, that existed in the vicinity. The village became a separate community (together with Agios Athanasios) in 1928, when it was split from the community of Vrastamites. In 1997 it became part of the municipality of Koroneia, which merged into the municipality of Livadeia in 2010.

The village is served by Alalkomenes railway station, with local stopping services to Leianokladi and Athens.