The Britain's Got Talent winner's big screen role made it to only number seven in the UK cinema charts for its opening weekend, taking £446,450.
King of the waltz Rieu saw screenings of a concert he gave in Maastricht, which were beamed into 395 UK cinemas pull in £830,586, taking him to number five in the box office list.
Pudsey The Dog: The Movie took around one-20th of the revenue generated by the weekend's biggest hit Dawn of the Planet of the Apes which took £8.7 million.
The poor showing for Pudsey comes just a day after he signed a merchandising deal which will see a range of cuddly toys and greetings cards launched.
The director of the film Nick Moore - who was also behind Horrid Henry: The Movie - achieved his lowest ever opening weekend, according to Screen International.
The film, in which David Walliams provided the voice of the performing dog, had not exactly impressed critics.
Reviewer Peter Bradshaw wrote in The Guardian that it was "depressingly bad", adding: "Watching this movie, I was overwhelmed with three emotions: boredom, embarrassment and chiefly shame on behalf of everyone involved."