The former Doctor Who favourite and his Broadchurch co-star Olivia Colman were named the most prolific male and female British acting talent in 2019.
The study, led by statistician Geoff Ellis, was conducted for BritBox, a new streaming service which presents content from the BBC, ITV, Channel 4 and Channel 5.
One hundred British TV and film stars who have either won or been nominated for a Bafta or National Television Award in the last decade were analysed on factors such as versatility in acting genres and number of appearances.
Tennant topped the list for hardest working, followed by Martin Clunes, Sir David Jason, Ms Colman and Dame Julie Walters.
Rounding off the top 10 are Sir Derek Jacobi, Dame Judi Dench, James Nesbitt, Steve Coogan and Sean Bean.
Mr Bean was also identified as the actor most likely to have an on-screen death, closely followed by Luther and The Wire star Idris Elba.
Mr Bean was also ranked as having the most star power, followed by Only Fools And Horses legend Sir David.
Mr Clunes and Dame Helen Mirren, meanwhile, were declared the most versatile actors.
Reemah Sakaan, group director for ITV subscription video on-demand, said: "This list highlights a small selection of the top talent in the UK and we're excited that our fans can enjoy many of the actors' much-loved classics and more recent work on the service."