Sajin has been accused of and has been involved in several controversies ranging from fraud, criminal record, remand time, fraud bureau investigations, unpaid loans, spying, overstepping and unfulfilled promises. Reportedly Sajin misused his position in
Mihin Lanka for personal gains and to that effect he appointed a company (in which his third wife was a director) in Singapore, as Passenger Sales Agent.
Attack on ranil wickremasinghe On 11 June 2013, the then opposition leader
Ranil Wickremasinghe’s convoy was attacked in
Balapitiya. Ranil was visiting fishermen's families who were victims of a recent natural calamity in Sri Lanka. Ranil alleged that the attackers had received Sri Lankan government backing and that Sajin was responsible for this attack. Few days after the attack on the convey and Ranil's subsequent allegation on Sajin for conspiring the attack, Sajin made a call to Ranil to convey his apologies and also asked for his forgiveness.
Attack on Dr. Chris Nonis In Sep 2014, Sajin allegedly attacked and assaulted Dr.
Chris Nonis following an argument in New York. Chris was Sri Lanka's High Commissioner to Britain at that time and subsequently he tendered his resignation but later withdrew it also. Sajin denied the charges against him.
Usd 2 billion aircraft purchase In Jan 2015, a complaint has been filed with Commission to Investigate Bribery or Corruption in Sri Lanka, asking for an investigation in purchase of aircraft and helicopters worth US$2.0 billion. The petition also mentioned financial irregularities and syphoning of funds by Sajin and his associate companies.
Passport seized commission of Sri Lanka, in Jan 2015 ordered to seize passport of former MP Sajin Gunawardena and barred him from leaving the country for three months. This ban was in view of pending corruption investigations.
Denied nomination for parliamentary election In Jul 2015, Sajin was denied a nomination by the UFPA for parliament election in Aug 2015. ==Arrests==