Christopher Graham's comments come ahead of publication today by the Home Affairs Select Committee of a list of clients of rogue private detectives, featuring law firms, insurance companies, financial services groups and celebrities.
But the commissioner said MPs should not be focused on "a day's headlines" and instead demanded that ministers implement effective regulatory action.
The names of around 100 firms and individuals who allegedly used corrupt private investigators was handed from the Serious Organised Crime Agency (Soca) to the committee earlier this year on condition it was not published - sparking a row over transparency.
Trevor Pearce, director general of Soca, refused to release the document despite an ultimatum from MPs and committee chairman Keith Vaz.
Mr Vaz told Mr Pearce and Stephen Rimmer, Soca's interim chairman, the committee would publish the list today if Soca did not do so first.
Mr Graham said: "It's not clever to start a criminal investigation by publishing the names of everyone and everything you're investigating. That's why we've stated we're not publishing the list at this stage, and why I've written to Keith Vaz MP to urge similar patience on the part of his Select Committee."