Juan Martin Flavier (Tagalog pronunciation: [hwan mɐɾˈtɪn flaˈvjeɹ]; June 23, 1935 – October 30, 2014) was a Filipino physician and politician.

[4] In 1995, he ran for senator and won under the Ramos administration ticket and was re-elected to a second term in the 2001 elections, placing second among the 12 winning candidates.

[5] When he was senator he had a perfect attendance record during sessions, a fact mentioned in the Senate resolution marking his death, which read in part, "The hard-working legislator registered a perfect attendance during the sessions and was instrumental in the enactment of landmark legislations promoting public health care and improving the quality of life of the people.

[8] He was admitted to the intensive care unit of the National Kidney and Transplant Institute in Quezon City as early as September 11.

Flavier wrote a regular newspaper column about his experiences as a doctor in the countryside, even while he served at Health Secretary.