The '''Alphabetical Collection''' (''Syntagma kata stoicheion'') is an encyclopedia of [[canons (law)|canon law ]] authored by noted Byzantine canonist [[Matthew Blastares|Hieromonk Matthew (Blastares)]] of Thessalonica. It was first published ca. 1335 and remains a standard canonical reference for the Orthodox Church to this day.
The full title of this [[nomocanon]] is ''An alphabetical collection of all subjects that are contained in the sacred and divine canons, prepared and at the same time organized by Matthew the least amongst hieromonks''.