The LMS Princess Coronation was a British steam locomotive built in 1930. It was part of the London, Midland and Scottish Railway (LMS) and was designed by William Stanier. The locomotive was notable for its streamlined design, which aimed to improve speed and efficiency on the railways. This locomotive was named after the coronation of a princess, reflecting the era's fascination with royal themes. The LMS Princess Coronation class included several similar engines, all known for their powerful performance and elegant appearance, making them a significant part of British railway history.