11 January - two Apartment complexes namely H2O Holy Faith (Holy Faith Builders and Developers Pvt Ltd) and Alfa Serene (Alfa Ventures Private Ltd) based in Kochi were demolished following Maradu apartments demolition order by Supreme Court of India.
12 January - the last two among the four to be demolished apartments in Kochi namely Jains Coral Cove(Jain Housing and Construction Ltd) and Golden Kayaloram (KP Varkey & VS Builders) demolished following Maradu apartments demolition order by Supreme Court of India. These apartments were built by violating Coastal Regulation Zone rules.
26 January - 2020 Kerala human chain as part of Citizenship Amendment Act protests.
February
4 Feb - Government of Kerala declares Coronavirus infection a state calamity after the reporting of third case in the state from Kannur district.
13 Feb - A Wuhan returned COVID-19 patient from Government T D Medical College, Alappuzha becomes the first patient in India to recover from the illness fully.
28 Feb - Dead body of six-year-old girl Devananda, who went missing from Kollam district found in Ithikkara River near her home.
March
23 Mar - Kerala reports 30 new cases of COVID-19 and subsequently a lockdown announced in state till March 31 to contain the spread of virus.
28 Mar - First COVID-19 death recorded in Kerala. Yakub Hussain Sait, 69, died at the Government Medical College, Ernakulam.
29 Mar - Hundreds of migrant labourers stage protests in Payippad, Kottayam district defying COVID-19 lockdown.
April
21 April - A sixteen year old boy killed using axe by his school mates near Kodumon, Pathanamthitta district.
May
7 May - A twenty one year old Novitiate found killed at Baselian Convent of the Syro-Malankara Catholic Church at Thiruvalla.
July
5 July - 2020 Kerala gold smuggling case
August
19 August - Kerala's COVID-19 tally breaches 50,000 mark.
24 August - A Motion of no confidence moved against First Vijayan ministry defeated 87 - 40.
28 August - A multi crore Ponzi scheme scam to the tune if 2000 crores conducted by Popular Finance, Konni, Kerala detected by Kerala Police owners apprehended from Indira Gandhi International Airport.
September
19 September - National Investigation Agency arrests nine Al-Qaeda operatives from among Migrant labourers at Ernakulam district.
October
29 October - Bineesh Kodiyeri, son of Communist Party of India (Marxist) leader, Kodiyeri Balakrishnan was arrested by Enforcement Directorate in Bangalore in connection with 2020 Bengaluru drug raids.
November
14 November - Peoples Democratic Party vice chairman Poonthura Siraj quits PDP and joins Indian National League ahead of local elections. However the Left Democratic Front denied him ticket to contest in Thiruvananthapuram Corporation.
December
8 December - First phase of 2020 Kerala local elections.
16 December - LDF bags more than half of all gram panchayats, two-thirds of district panchayats and in four out of six municipal corporations in local elections.
Deaths
April
7 April - Sasi Kalinga, 59, actor.
25 April - Ravi Vallathol, 67, actor.
May
18 May - M. P. Veerendra Kumar, 82, politician and writer.
July
30 July - Anil Murali, 56, actor.
October
15 Oct - Akkitham Achuthan Namboothiri, 94, Poet and Jnanpith Award winner.