Popovac can refer to:

• Popovac, a village and a municipality near Osijek, Croatia
• Popovac, Sisak-Moslavina County, a village near Novska, Croatia
• Popovac (Veliko Gradište), a village in Serbia
• Trnovitički Popovac, a village in Bjelovar-Bilogora County, Croatia
• Popovac (Čelinac), a village in Čelinac, Bosnia and Herzegovina

• Ludwig Holgersen Rosenkrantz
• Ludwig Hormann
• Ludwig H. Plate
• Ludwig Huber (disambiguation)
• Ludwig Hülgerth
• Ludwigia octovalvis
• Ludwigia peruviana
• Ludwig II (2012 film)
• Ludwig II (sculpture)
• Ludwig Imhoff
• Ludwig Institute for Cancer Research
• Ludwigioideae
• Ludwig Jahn
• Ludwig Johann Wilhelm Gruno von Hessen-Homburg
• Ludwig Joseph Gerstner
• Ludwig Jungermann
• Ludwig Karl Eduard Schneider
• Ludwig Karl Martin Leonhard Albrecht Kossel
• Ludwig Keller
• Ludwig Kentner
• Ludwig Kretz
• Ludwig Kronstrand
• Ludwig Lemcke
• Ludwig Levy
• Ludwig Lohner