The submandibular ganglion (or submaxillary ganglion in older texts) is part of the human autonomic nervous system.

The submandibular ganglion is small and fusiform in shape.

It is situated above the deep portion of the submandibular gland, on the hyoglossus muscle, near the posterior border of the mylohyoid muscle.

It is suspended from the lingual nerve by two filaments, one anterior and one posterior.

Like other parasympathetic ganglia of the head and neck, the submandibular ganglion is the site of synapse for parasympathetic fibers and carries other types of nerve fiber that do not synapse in the ganglion.