A Coney Island principal has put the kibosh on patriotism — again.

Greta Hawkins caused a furor when she barred her PS 90 kindergartners from singing “God Bless the USA” at their graduation ceremony in 2012.

Now she has stopped pre-K kids from singing “Stand Up for the Red, White and Blue” at their June 19 moving-up ceremony.

A class of 4-year-olds was rehearsing the song — which they would belt out while marching into the auditorium waving mini-American flags — when Hawkins halted the patriotic parade.

“You didn’t ask permission to do it,” Hawkins scolded the teachers.

Stunned and disappointed, teachers said the simple, rhyming processional was sung to cheers at a pre-K ceremony several years ago.

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