There are 3 repositories under wordpress-bootstrap-theme topic.
Bootstrap in WordPress theme form - Bootstrap 3.3.1
WordPress Timber/Twig seed theme using Bootstrap 3, Gulp and Bower. Also included are some pre-installed Advanced Custom Fields Pro flexible content modules
Wordpress custom theme like Medium create with Bootstrap the world’s most popular front-end open source toolkit.
A Bootstrap 5 Starter Theme, for WordPress with SEO meta tags