Brogniartfjella is a mountain ridge in Nathorst Land at Spitsbergen, Svalbard.
The ridge is located at the north side of Van Keulenfjorden.
[1] It has a length of about eight kilometers, and its highest peak is 904 m.a.s.l.
The ridge is named after French paleontologist Adolphe-Théodore Brongniart.
[2] The valley of Wittrockdalen separates Brogniartfjella from Wittrockfjellet.