| Cabinet Name: | First Frederiksen cabinet |
| Cabinet Number: | 78th |
| Jurisdiction: | Denmark |
| Flag: | Flag of Denmark (state).svg |
| Flag Border: | true |
| Incumbent: | 2019–2022 |
| Date Dissolved: | 15 December 2022 |
| Government Head: | Mette Frederiksen |
| State Head: | Margrethe II of Denmark |
| Members Number: | 20 |
| Political Party: | Social Democrats |
| Legislature Status: | Minority Supported by:[1] Social Liberals SF Red–Greens |
| Opposition Parties: | Venstre Danish People's Party Conservative People's Party New Right Liberal Alliance Independent Greens Alternative Christian Democrats Union Party |
| Legislature Term: | 2019–2022 |
| Predecessor: | Løkke Rasmussen III |
| Successor: | Frederiksen II |
The Frederiksen I Cabinet took office on 27 June 2019 and succeeded the Lars Løkke Rasmussen III Cabinet following the 2019 Danish general election. Headed by Prime Minister Mette Frederiksen, it was a minority government consisting of the Social Democrats. It relied on parliamentary support from the Red–Green Alliance, the Socialist People's Party, and the Social Liberal Party.[2]
On 5 October 2022, Frederiksen announced a new election to the Folketing on 1 November 2022.
On 2 November 2022, Frederiksen informed the queen that the cabinet would resign that day, continuing in an acting capacity until a new government could be formed.[3] [4] On 13 December 2022, it was announced that a new majority government would be formed consisting of the Social Democrats, Venstre, and the Moderates, led by Frederiksen.[5] The government was formed on 15 December 2022.