Haaland faced questions following Norway's 3-1 victory over Wales, with the forward making clear that he did not want to become involved in a matter between Manchester City and the Premier League.
The 25-year-old explained that he joined City in 2022 and believed the decision had been the right one, pointing to the trophies he has won and his development as both a footballer and a person.
However, the subject did not sit comfortably with Wales head coach Bellamy, who was asked at his post-match press conference whether it was fair for Haaland to face questions about the club while representing his country.
"I don't think it's fair," Bellamy replied.
"I understand that the question is being asked, but when you're here representing your country, I don't think you should have to talk about things that are happening elsewhere," he said, according to TV 2 Norway.
Bellamy's comments offered support to the Norwegian striker, who had been asked to address a complicated legal matter involving his club during a period of international football.
Manchester City were found guilty by an independent commission of numerous alleged breaches of Premier League financial regulations relating to the period between 2009 and 2018. The club has appealed the decision, with the question of any sanction still unresolved.
Haaland was not at Manchester City during the period under investigation. He joined the club from Borussia Dortmund in 2022, having previously played for Bryne, Molde and Red Bull Salzburg.
The striker nevertheless found himself facing questions about a case that predates his arrival in Manchester.
On the pitch, Haaland played an important role in Norway's victory over Wales. He provided the assist for Andreas Schjelderup's second goal before scoring a penalty to complete the 3-1 result.
Bellamy's intervention highlighted the distinction between a player's responsibilities to his club and his country, and the expectation that he should answer for matters that took place before he arrived.
For Haaland, the immediate focus remained on Norway's international campaign rather than the ongoing dispute involving Manchester City.