"Sri Lanka Cricket and the manner in which it is being administered and managed is so disgusting that I don't watch our national cricket anymore," Ranatunga was quoted as saying by 'Ceylon Today'.
Sri Lanka is currently engaged in a three-Test series with India, which will be followed by five one-dayers and a T20 International.
However, Ranatunga said he preferred watching the recent England-South Africa Test series, which England is leading 2-1 with the fourth Test scheduled to start from August 4.
The 52-year-old said he would be writing to the President Maithripala Sirisena and Prime Minister Ranil Wickremesinghe about the need for the reinstatement of the Interim Committee to manage Sri Lanka Cricket.