You can remove duplicate title tags in WordPress by using an SEO plugin like Yoast SEO or Rank Math to set up canonical URLs and clean meta templates. Duplicate titles usually happen when pagination, category archives, or multiple plugins attempt to generate meta titles for the same page. You should inspect your active plugins to ensure only one tool handles your site SEO settings at a time. Adding clean canonical tags helps search engines identify the main version of your content and prevents duplicate metadata issues.