Greste will be asked to participate in UNESCO World Press Freedom Day events that will take place in Riga from 2 to 4 May to talk about his experiences working in the world's "hot spots," the Foreign Ministry said in a statement.
The invitation will be delivered by Latvia's non-resident Ambassador to Australia, AndrisTeikmanis.
At the same time today, the Latvian National Commission for UNESCO has nominated Greste as a candidate for the 2015 UNESCO World Press Freedom Prize, backed by the Latvian Association of Journalists.
World Press Freedom Day is May 3rd.
A decision on the winner of the prize is likely to be made in mid-March, the ministry said.
Greste holds dual Latvian and Australian citizenship and was presented with his Latvian passport while still behind bars in Cairo.
Latvia worked closely with Australia to secure his release following a trial that was widely condemned as a travesty of justice.