Coat of arms of Negeri Sembilan

The flag and the coat of arms of Negeri Sembilan are state symbols of Negeri Sembilan, Malaysia. Influenced by the heritage of the Minangkabau people, the original settlers in present-day Negeri Sembilan, the symbols are predominantly depicted in red, black and yellow, traditional colours of the Minangkabau. Also recognised in the symbols are the political history of Negeri Sembilan, its ruler, and the state's past relationship with the British Empire.

The flag of Negeri Sembilan consists of a yellow flag with a canton on the upper hoist, which is divided diagonally from the corner of the upper hoist towards the corner of the lower fly. The upper portion of the canton is coloured red, while the lower portion is coloured black, exactly like the flag of Papua New Guinea.

The symbolisation of the flag is primarily concentrated towards the association of the its colours with the people of the state. The yellow represents the Yang di-Pertuan Besar of Negeri Sembilan, the red denotes the citizens of the state, and the black symbolises the four undangs (traditional chiefs).

As well as being the state flag of Negeri Sembilan, the flag is also in use by the Yang di-Pertuan Besar as the royal standard to date. Prior to 1942, the British Resident of Negeri Sembilan was also assigned the same flag, with the exception it is forked at the fly.

Certain districts (luak) in Negeri Sembilan have their own flag for ceremonial uses during Adat Perpatih events. They are hardly seen in daily government administrative functions.

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