Please explain more.
- Did you have iPhoto before and it is now missing all of a sudden?
- Did you buy a new Apple computer with iPhoto preinstalled and cannot find it?
- Did you reinstall your system and now iPhoto has to be reinstalled?
- What is your MacOS X version?
Any new apple branded computer is supposed to come with iPhoto preinstalled. For older computers iPhoto has to be bought separately from the App Store.
iPhoto should be installed in your "Applications" folder.To search for iPhoto on you Mac, if it went missing, type "iPhoto" into the Spotlight search field:
If iPhoto should have come preinstalled, launch the AppStore and look at the "Purchased" tab, if you can see iPhoto there, ready for redowndownload.