Kallas earlier indicated that EU missions in the region could potentially have their mandates adjusted so they could take part in efforts to restore maritime traffic through the strategic waterway.
“That is an interesting suggestion,” Sikorski said, referring to the proposal.
He added that US President Donald Trump had appealed to NATO for help securing the strait but that several NATO countries had already responded.
“To be clear, Poland has no plans to take part in such a mission,” Sikorski said.
Trump on Sunday renewed calls for other countries to join an operation aimed at keeping the Strait of Hormuz open after Iran threatened to disrupt traffic through the route.
Sikorski said earlier on Monday that if the United States formally asked NATO to discuss protecting the strait, allies would consider the request.
However, he said the United States had not invoked Article 4 of the NATO treaty, which allows members to consult when they believe their security is threatened.
Sikorski noted that the EU operates two naval missions close to the Strait of Hormuz.
One of them, Operation Aspides, operates in waters near the Horn of Africa and has been used to counter threats to shipping, including piracy.
Another, Operation Atalanta, has focused on protecting maritime traffic from attacks by Yemen’s Houthi rebels in the Red Sea.
Sikorski said he personally supported opening a dialogue with Washington on whether the missions could potentially play a role in helping ease disruptions to shipping once conditions in the region stabilize.
“There's a huge congestion of ships on both sides of the strait,” he said.
He added that a political dialogue between the EU and the United States on maritime security could be of interest to Washington.
“The European Union has an interest in ensuring that oil reaches global markets and that food and fertilisers reach the Persian Gulf,” Sikorski said.
The Strait of Hormuz is a key maritime route for oil exports from Iran, Saudi Arabia, the United Arab Emirates, Bahrain, Kuwait and Iraq.
Qatar also ships most of its liquefied natural gas through the narrow waterway, which at its tightest point is about 20 nautical miles wide.
Sikorski was also asked whether the easing of US sanctions on Russian oil could be a mistake. He said the situation had not yet been fully analysed but added that Russia stood to benefit from higher oil prices.
According to Sikorski, EU foreign ministers broadly agreed that any lifting of sanctions on Russia should come only after a peace agreement is reached between Russia and Ukraine.
“Doing so now would weaken our negotiating position,” he said.