The change management process is the responsibility of: 1- Top management or 2- Intermediate management or 3- Low management. ?

Top management is responsible for enforcing the process, approve the related policies and procedures, and follow up to ensure implementation and evalute the results and approve modifications to the policies and procedures as and when required.

Intermediate and low management is responsible for the implementation of the policies and procedures approved by the top management. Each of them is responsible for aligning his/her operational plans with those policies and procedures and managing thier performance and reporting the results and recommendations to top management.

Change Management process(es) is a distruibuted responsibility and not centralized in one place, function, level or department.

Wherever change takes place, or needed to take place.  it is the responsibility of the OWNER or the PERSON IN CHARGE  where change is needed.

The responsibility between those who approve , those who implement, and those who manage may come to different people within the organization

Mr. Thiab answer seems more logical and actually practical also.

It is depend to what change is. 

But mostly the Top and Intermediate management is response of this process.  

And also I agree of Mr Thiab in his point of view.  

Opinion should be taken for all3 levels

Decision should be taken by Top Management

Ownership lies with the top management, So top management should call for a meeting take everyone inputs, go through in details of effects and outcome of process to be made and then take a decision and prepare process

Good answer by Mohammad Tohamy Hussein, I echo with him..

Responsibility is with top management.

The change management is responsiblity of the manager at the level changes are required to suit the needs and conditions at that level in colobration of the higher managemnet to avoid the confussion with in the facility and as the higher management has broader view of the project with respect to the stake holders, budjet and the client.

All three should be included in the process, however; depending on the ROI the final decision may be left to either middle or second.

Low management needs to be included in the decison because without their support the program / /new implementations will not work no matter what anyone decides.

Middle managament might be able to make the decison depending on what their budget is.

 If the new program has C-Level eyes on it, top management will most certainly have more to say on it's implementation

the authority is of top management