Sekolah Menengah Kebangsaan Sultanah Asma (GPS: 6.13304, 100.3898) is a secondary school in Alor Setar, Kedah. Today it is located on Lorong Pauh off Jalan Langgar.
Established in March, 1922, SMK Sultanah Asma was originally called the Kampong Baru Girls' School, as it was located in the Kampung Baru neightbourhood of Alor Setar. It was established to educate the daughters of the royal family as well as high-ranking officials. Only in 1934 was it open to the public, and in 1964, pupils following the Malay stream was moved to a new school on Jalan Day. The school was renamed in honour of Tunku Ampuan Asma ibni Almarhum Sultan Sulaiman Badrul Alam Shah, the Sultanah of Kedah, when she laid the foundation stone for the school building, which was completed in 1956.
In the beginning, the Kampong Baru Girls' School occupied the premises of Istana Sepachendera, which was the official residence of Che Sepachendera, the first consort to Sultan Abdul Hamid Halim. The palace was bought over by the Kedah state government for use as the school, which was established by YTM Tunku Ibrahim, also called Tunku Sulung, who incidentally was born in Istana Sepachendera.