TMSR

TMSR may refer to


 * Tera Mera Saath Rahe, 2021 Indian TV drama series
 * Tera Mera Saath Rahen, 2001 Indian drama film
 * The Most Serene Republic, Canadian indie rock music group
 * a Thorium molten salt reactor
 * TMSR-LF1, a pilot plant in China
 * ThorCon nuclear reactor