To do Alt + H O R on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, O, and R.
Command: Rename Sheet
This is how to do Alt + H O R on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + H O R activates the sheet tab name for editing, allowing you to type a new name for the current worksheet. Press Enter when done to confirm the new name. This is faster than double-clicking the sheet tab.