Ronnie Liu Tian Khiew (Chinese: 劉天球; Jyutping: Lau4 Tin1 Kau4; Pe̍h-ōe-jī: Lâu Thian-kiû; Pha̍k-fa-sṳ: Liù Thiên-khiù; born 29 March 1958) is a Malaysian politician who served as Member of the Selangor State Legislative Assembly for Sungai Pelek from May 2018 to August 2023 and for Pandamaran from March 2008 to May 2013. He was also the Member of Selangor EXCO for Local Government, Research and Development, and the Member of Selangor State Legislative Assembly for from 2008 to 2013.^[1]

He was a Member of the DAP Central Executive Committee and the International Secretary for DAP.^[2][3] On 9 October 2022, he had announced that he will quit DAP due to dissatisfaction of some of the party leaders, but after two days he had decided to continue to stay in the party for his constituents.^[4][5] On 23 June 2023 when he became the caretaker Sungai Pelek MLA following the dissolution of the assembly, he asked for the termination of his DAP party membership effective the next day on 24 June 2023 in a letter addressed to Secretary General of the party Anthony Loke after being with the party for 41 years since he was in secondary school in 1982. He gave the reason of having met a lot of "things that are beyond my expectations". Although leaving DAP, he carried on aligning himself with and supporting PH, Prime Minister Anwar Ibrahim of PH and the Malaysia Madani concept introduced by the PH administration.^[6]

On 1 September 2005, in his blog in the official website of DAP, he had stated that Chin Peng, the leader of the Malayan Communist Party, is a Fighter of Independence for Malaya. This statement had offended many of the veteran soldiers, such as Kanang anak Langkau.^[7][8]

On 3 November 2007, police in Puchong had started an investigation on him as he had obstructed officers of the Subang Jaya City Council to stop immoral activities in a hotel in Bandar Puchong Jaya. Assistant Commissioner, Zainal Rashid Abu Bakar had said that he was given 5 warnings but he still refused to cooperate.^[9]

On 29 July 2010, The Star had exposed that Tee Boon Hock, a member of Klang Municipal Council had used official letters to enable his cronies and family members to get contracts from the government. On 12 August 2010, the Speaker of Selangor State Legislative Assembly, Teng Chang Khim and him were called to the DAP Disciplinary Committee as Tee had said that he was instructed by Ronnie.^[10][11]

On 23 October 2019, he had criticised by-then Prime Minister of Malaysia, Mahathir Mohamed that he had a different ideology with Pakatan Harapan. He also asked for another general election so that Pakatan Harapan can form a better federal government without BERSATU. The members of BERSATU had denounced him and Mohd Rafiq Naizamohideen had asked DAP to reconsider the alliance between DAP and BERSATU. DAP had stated that this is just a personal statement by Ronnie and the Disciplinary Committee had summoned him for questioning.^[12]

On 21 October 2020, he had posted a picture of the 2020 Thai protest and captioned "They say no to the King". He deleted the post after someone had lodged a police report, but he still get investigated because of it.^[13]