Dayang Kalangitan (r. 1450–ca. 1515) is the only recorded queen regnant of the pre-Hispanic Philippine Kingdom of Tondo. The eldest daughter of Rajah Gambang and co-regent with her husband, Rajah Lontok, she is considered one of the most powerful rulers in the kingdom's history. She is also notably the last animist ruler of the kingdom, which encompassed land along the banks of the Pasig River in Metro Manila.

Dayang Kalangitan was the daughter of Rajah Gambang, who was then sovereign of Tondo. Since her father died without leaving a male heir, she was appointed queen regnant. Kaylangitan married to Gat Lontok, (later Rajah Lontok) of Tondo. Believing herself capable of ruling, she proved to be a strong ruler. Together with her husband, Kalangitan established a small kingdom upstream to the east of Tondo around the Bitukang Manók (today the polluted Parian Creek in Pasig City).

Sometime around 1450, she became sole ruler of both Tondo and her own realm in Bitukang Manók'. In order to maintain power and influence as queen, Kalangitan assented to the marriage of one of her daughters, Dayang Panginoon, to Prince Balagtas, the son of Empress Sasaban of Namayan.

Dayang Kalangitan's son Salalila succeeded her as monarch of Tondo; after converting to Islam, he adopted his more famous name, Sulaiman.

Dayang Kalangitan had four children:

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