The club has released the following statement.
"Chelsea Football Club can confirm Rafael Benitez has been appointed interim first-team manager until the end of the season.
"The owner and the board believe that, in Benitez, we have a manager with significant experience at the highest level of football, who can come in and immediately help deliver our objectives.
"The 52-year-old Spaniard is due to meet the players at the training ground in Cobham tomorrow.
"The two-time UEFA Manager of the Year comes with outstanding pedigree.
"He began his managerial career in his homeland, most notably at Valencia where he built a reputation as one of Europe's top coaches by winning the Spanish League twice and the UEFA Cup.
"He then spent six years at Liverpool and led them to their fifth European Cup and an FA Cup."
More top news
Four men have been jailed for their part in the murder of a legal administrator, who was stabbed outside a pub on Borough High Street.
An American man has been sentenced to life in prison after travelling to the UK in a bid to murder a woman he met through online gaming.
The National Lottery has revealed the place where people win more big payouts than anywhere else - and it's in the capital