North Korea test-fired two SCUD missiles and a Rodong medium-range missile on Tuesday, in further defiance of the international community and in apparent reaction to the planned deployment of a US defense system in South Korea.
"The DPRK's firing of missiles is deeply troubling," said Ban's spokesman Farhan Haq.
"Such actions are not conducive to reducing tensions on the Korean peninsula."
The UN Security Council is discussing a response to North Korea's missile tests, said Japan's ambassador and the council president.
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"We are talking to several friends," he added.
The US Defense Department said Washington would raise its concerns over the latest launches at the United Nations.
But the US mission said it had not called for consultations at the Security Council on North Korea.
A US-drafted statement condemning an apparent submarine-launched ballistic missile earlier this month was still under discussion with China, Washington's key partner on North Korea, diplomats said.
The council last adopted a statement condemning North UN resolutions prohibit North Korea from developing ballistic North Korea has been hit by five sets of UN sanctions since it first tested an atomic device in 2006.