Salome Alt (21 November 1568 – 27 June 1633), was the mistress to Wolf Dietrich von Raitenau, reigning Prince-Archbishop of Salzburg, from about 1593 until 1617.

[2] Salome Alt met the Archbishop at a festivity in the Alten Stadttrinkstube, whereafter Raitenau took her, initially in secret, to his Salzburg residence.

[2] In 1606 Raitenau built a shared retreat for them erected outside the Salzburg city walls, Schloss Altenau, which later was rebuilt as Mirabell Palace by his nephew and successor Mark Sittich von Hohenems.

A reflective and friendly balanced character, uninterested in politics, Salome was a haven of peace for her partner stuck in increasing internal and external conflicts.

Through Raitenau's gifts and purchases in the archbishopric of Salzburg, Salome Alt's assets reached the enormous value of more than 400,000 guilders, assessed in an inventory of 31 October 1610.

Deserted by his cathedral chapter and abandoned by Emperor Rudolf II, Raitenau packed off his family to the Ansitz Thurnhof in Flachau for safety, and fled the Salzburg court himself, seeking refuge at Kärnten.

He was, however, captured by the Bavarians at Gmünd, and brought first to Hohenwerfen Castle, then Hohensalzburg Fortress where he was imprisoned by his successor, Mark Sittich von Hohenems.

In 1622 Salome Alt von Altenau bought a house in Wels, Stadtplatz 24, which still stands today, with its late gothic oriel bearing the three coats of arms of the Hofmann family, and its frescoes dating back to 1570.

A painting by Camillo Procaccini (born 1546 in Bologna) showing the burial of Christ, depicts Salome Alt in the foreground as Mary Magdalene.