Namdaemun (Korean for "South Grand Gate") is a historic gate in Seoul, South Korea, officially known as Sungnyemun.

Namdaemun may also refer to:

• Namdaemun (Kaesong), a historic gate in Kaesong, North Korea

• Namdaemun Market, one of the oldest and largest traditional outdoor markets in South Korea, which is located very near the Namdaemun Gate
• Namdaemun Market station, an alternate name for Hoehyeon station, a subway station near Namdaemun Market in Seoul, South Korea
• Namdaemun Station, the first Seoul railway station
• Namdaemunno, a major thoroughfare in central Seoul, South Korea

This disambiguation page lists articles associated with the title Namdaemun.
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