MS Excel: Unhide a column in Excel 2011 for Mac
Also learn how to unhide a column in Excel 2011 for Mac | Excel 2010 | Excel 2007 | Excel 2003/XP/2000/97.
Question: How do I unhide a column that has been hidden in Excel 2011 for Mac?
Answer: Select the column to the right and the column to the left of the hidden column. In this example, column B is hidden.

Right-click and select "Unhide" from the popup menu.

Now, column B should no longer be hidden.

Also learn how to hide a column in Excel 2011 for Mac | Excel 2010 | Excel 2007 | Excel 2003/XP/2000/97.