Piyasvasti Amranand (Thai: ปิยสวัสดิ์ อัมระนันทน์; RTGS: Piyasawat Ammaranan), born 11 July 1953) was Thailand's Energy Minister between 9 October 2006 and 6 February 2008.

He was President of Thai Airways International between October 2009 and June 2012 and Chairman of PTT Public Company Limited between July 2014 and 2018.

During the 1990s, Piyasvasti played a key role in deregulating and privatizing a number of energy-related state enterprises like PTT and power generation business.

During his term as energy minister he implemented wide-ranging reforms in the energy sector, for instance, the end of oil price subsidies and repayment of the oil fund's massive debt accrued by the previous government's subsidy program; implementation of aggressive policies to promote renewable energy (including biofuels), cogeneration and distributed generation; adoption of Euro 4 fuel qualities and introduction of vapour recovery systems for petrol stations; adoption of a number of standards and incentive programs for energy efficiency; awards of a large number of petroleum concessions, issuing of IPP solicitation; conclusion of a number of power purchase agreements for projects in Laos; establishment of a nuclear power program with a target for 4,000 MW of nuclear capacity in 2020-2021; and amendment of a number of energy-related laws.

[1] He continued to implement the turnaround plan and introduced a long term strategic plan where the financial position of the company was substantially strengthened, embarked on the largest aircraft acquisition and retrofit program ever implemented at Thai Airways, and formed Thai Smile as a first step in competing with low cost airlines.