Luis Ignatius Peñalver y Cárdenas (3 April 1749 – 17 July 1810) was a Cuban Catholic prelate who served as Bishop of New Orleans, and as Archbishop of Guatemala.

After studying belles-lettres and philosophy in St. Ignatius College, Havana, he followed there the courses of the University of St. Jerome and in 1771 obtained the degree of Doctor of Theology.

Upon his return in 1799, he drew up a report in which he complained of the ignorance, irreligion, and the want of discipline which then prevailed in Louisiana.

[1] Peñalver was promoted to the Archiepiscopal See of Guatemala on 20 July 1801, and by a Rescript from Rome was empowered to transfer his authority in Louisiana and the Floridas to Thomas Hasset, his vicar-general, and to Patrick Walsh.

James Blenk writes of him that he was "a man of great talents, zeal, and piety, whose administration was marked by an uncommon degree of wisdom and a strict attachment to the discipline of the Church.