Minister Shatter has condemned the publication of the posters which target him personally in his South Dublin constituency.
Posters containing bloodied photographs and the slogan "Every Child Matters Except to Alan Shatter" -- with the words "Stop Abortion" underneath -- were placed next to a creche as well as Wesley College school.
The posters were customised versions of Fine Gael's children's referendum campaign posters, which carried the slogan "Every child matters".
The original image of a boy holding a teddy bear was covered over with a graphic image of a gloved hand holding what appear to be the legs of a bloodied foetus.
The words "Stop abortion" were also added to the posters.
In a statement, Mr Shatter said that those responsible for the posters, which he described as untruthful and illegal, showed a "lack of humanity, insight and compassion".
He described the posters as "obscene and insensitive" and said those responsible were "apparently too cowardly to include their identity".
He said: "The lack of humanity, insight and compassion of those responsible for these posters is starkly illustrated by their positioning adjacent to Wesley College school, close to where I live, and their reported positioning outside at least one creche in my constituency."
Mr Shatter said it was regrettable "that a minority of individuals are now reverting to the insensitive and disgraceful tactics deployed by the fundamentalist bully boys who targeted both me and others in the early 1980s".
Anti-abortion groups Youth Defence and the Life Institute have indicated that they had no knowledge about the origin of the posters.