If these are data validation dropdown lists, you can't change the font
size. There are a couple of workarounds he

http://www.contextures.com/xlDataVal08.html#Larger


Stu wrote:
I would like to increase the size of the font in the drop-down box but have
not found a way to do that. Has anyone else found out how to do this? Thanks!


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Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html