The 'All I Wanna Do' singer wrote in a sworn statement that she was terrified of Phillip Gordon Sparks, who must now stay 90 metres away from the star and is forbidden from contacting her, her family or her colleagues.
Crow claimed that Sparks had left angry messages online saying that she had stolen money from him and broken into his house, according to BBC News.
A worker at the Screen Actors Guild said in their own declaration that Sparks had announced he would "just shoot" Crow during a confrontation at their office in July.
The man is also said to have levelled similar accusations at Harvey Weinstein, claiming that the film executive stole millions of dollars from him and was recording footage of him.
A hearing on a three-year protective order will take place in California on August 14.
The ruling comes almost two months after Crow revealed that she has been diagnosed with a benign brain tumour.
The musician later assured fans that she is "feeling very healthy and happy".
Watch the video for Sheryl Crow's 'If It Makes You Happy' below: