Graeme Smith and Andrew Hall have both received bans, while Yousuf Youhana has been been fined for an incident involving the three during the second one-day international at Lahore last week.
The penalties were imposed after a hearing in Rawalpindi on Friday evening. They relate to charges brought by Malcolm Speed, the ICC chief executive, based on the video footage of an incident that took place when Pakistan were batting during the second ODI at the Gaddafi Stadium.
"Having considered all of the evidence I have found all three players in breach of the ICC Code of Conduct," said Clive Lloyd, the match referee. "The provisions of the Code are there to ensure that the game is played in the right spirit and the penalties imposed reflect the fact that on this occasion these players acted in a manner that was not consistent with their obligations as professional cricketers.
"They need to be aware at all times that it is part of their professional duty to convey the right image to the public, particularly young fans, and that such behaviour will not be tolerated."
Graeme Smith was found guilty of a Level 2 offence relating to the use of obscene or offensive language. Smith has been handed a one-ODI ban and fined 50% of his match fee.
Andrew Hall was found guilty of two breaches of the Code. The first was a Level 2 breach for inappropriate and deliberate physical contact for which he was banned for one ODI. The second was a Level 3 offence for conduct that brings the game into disrepute, for which he has been banned for two Test matches. There is no right of appeal for a Level 2 breach, but there is for a Level 3 one. If there is no appeal the bans apply consecutively with immediate effect, which would mean that both Smith and Hall will miss the final ODI of the current five-match series - the series is finely balanced at 2-2 - in Rawalpindi on Sunday.
Yousuf Youhana was found guilty of a Level 1 offence of bringing the game into disrepute, and has been fined 50% of his match fee.