Brooklyn Borough President Eric Adams is planning two memorials to commemorate the Malbone Street Wreck — a subway derailment that killed some 100 straphangers in 1918.

Adams’ office will hold a wreath-laying ceremony at the site of the wreck on the tragedy’s 100th anniversary of this fall.

“We know it’s been 100 years, but we’re hoping to find family members [of the victims] to come,” Adams said.

In addition, a permanent plaque is planned to be installed near the site.

“It’s important that people know what happened at that location,” Adams added.

On Nov. 1, 1918, a motorman blew through a hairpin curve under Prospect Park in a 6-mph zone at 44 mph, crashing his train into a concrete wall and decimating the first few cars. The death toll was near 100 in the city’s worst rail wreck.