How to include category name of single post in page title

Couple ways:

1. http://wordpress.org/support/topic/34542#post-195689

2. More preferred way, place this at the top of your header (usually header.php) template:

<?php $category = get_the_category(); ?>

Then in your <title> element, something like the following (exact placement in the title is up to you):

<?php if(is_single()) { echo echo $category[0]->cat_name; } ?>

If #2 doesn’t work, let me know. There’s a way to duplicate what get_the_category() is doing for us here with the post’s data but even more globally.