Andrew Hastie, who chairs the powerful intelligence and security committee, used parliamentary privilege to claim businessman Chau Chak Wing funded the bribery of former UN president John Ashe.
Dr Chau, who is an Australian citizen, has donated to both the Liberal and Labor parties in the past decade.
According to Mr Hastie, Dr Chau was referred to in a court indictment relating to the bribery as "Co-Conspirator 3 or CC-3".
Mr Hastie, a Liberal MP, said the bribe amounted to $200,000.
He recently met with United States authorities about espionage and foreign interference legislation, and said it was during those discussions he confirmed the "long-suspected identity of CC-3" as Dr Chau.
"The same man who co-conspired to bribe the United Nations president of the General Assembly, John Ashe," Mr Hastie said.
"The same man with extensive contacts in the Chinese Communist Party, including the United Front.
In parliament on Tuesday night, Mr Hastie tabled a "sensitive" US State Department cable from 2007.
He said Dr Chau had "close contact with the United Front, the influence arm of the Chinese Communist Party in 2007".
"So what is the connection to Australia? CC-3 is a Chinese-Australian citizen," Mr Hastie told parliament.
http://www.abc.net.au/news/2018-05-22/chau-chak-wing-un-bribe-scandal/9788926