Mustard Seed International (MSI) is an interdenominational Christian organization.

It was established in Formosa (now Taiwan) by Lillian Dickson after World War II.

[1] After the war, Dickson and her husband returned to Formosa to continue their ministry work.

The work eventually evolved into what is now known as Mustard Seed International.

[2] During the 1960s, MSI supported clinics worldwide and was involved in the establishment of various public health interventions.