The 6th Congress of the Philippines (Filipino: Ikaanim na Kongreso ng Pilipinas), composed of the Philippine Senate and House of Representatives, met from January 17, 1966, until June 17, 1969, during the first three-and-a-half years of Ferdinand Marcos's presidency.

The Sixth Congress passed a total of 1,481 laws.

(Republic Act Nos.

4643 – 6123) The following are the terms of the senators of this Congress, according to the date of election: