The Spanish giants are enduring a dismal season by their high standards and currently sit fourth in La Liga, 19 points adrift of leaders Barcelona.
Their problems were compounded last week when cross-city rivals Leganes dumped them out of the Copa del Rey.
Zidane has come under pressure amid Real’s problems and Florentino Perez is thought to be lining up potential replacements.
Ronaldo apparently has the Frenchman’s back though and he is joined in supporting his manager by four team-mates.
According to Spanish publication Diario Gol, Karim Benzema, Marcelo, Luka Modric and Keylor Navas are also desperate for Zidane to stay.
And that stance is being motivated by the knowledge they could be ditched by a potential new boss.
Diario Gol claim Gareth Bale and Raphael Varane are gravitating towards Ronaldo and co. as the split ensues.
On the other side of the debate are five players that are on the fringes of Zidane’s first-team plans.
Isco, Marco Asensio, Lucas Vazquez, Dani Ceballos and Mateo Kovacic are frustrated at Real and know their chances will continue to be limited with Zidane in charge.
Real skipper Sergio Ramos is said to be avoiding taking sides as he looks to maintain a positive relationship with his team-mates, Zidane and Perez.