The Catholic Church in Scotland says it will maintain neutrality during the debate but both Archbishops in the country have called for Christians to participate.
Scots will be asked the yes/no question 'Should Scotland be an independent country?' on 18 September.
Archbishop Philip Tartaglia of Glasgow said: "The Scottish Independence Referendum is now just a short time away.
"Along with the Bishops of Scotland, who are deeply conscious of the importance of this referendum, I encourage and urge all those eligible to vote to do so with complete freedom of choice and in accordance with their prayerful judgment of what is best for the future.
"May God guide us and bless us in whatever choice we make in good conscience."
Whilst Archbishop Leo Cushley of St. Andrews and Edinburgh said: "I encourage you, in the light of Catholic social teaching, carefully to consider the issues and to do your civic duty on the day itself.
"No matter the result of the Referendum, I would hope that all Catholics will continue to engage positively in public discourse, and ensure that the Christian message and its values are better expressed and understood, to the benefit of the whole community.
"By doing so, our beloved land will be a more just, peaceful and prosperous place for all its citizens. "