The 83-year-old veteran was suffering from a chronic obstructive pulmonary disease.
While his closely-guarded funeral, held in Los Angeles on March 1 and attended by family and close friends, was overshadowed by his longtime pal and Star Trek costar William Shatner's no-show, fans gathered in California to pay tribute to him.
A look at the pictures:
Flowers and a picture of actors Leonard Nimoy and William Shatner as Star Trek characters Mr Spock and Captain Kirk are placed by the Hollywood Walk of Fame star of Nimoy on Hollywood Boulevard in Los Angeles, California.
Christine Nguyen Chiem, a Star Trek fan, writes a note on Nimoy's Hollywood Walk of Fame star.
A closer look at Chiem's sympathy note.
Fans leave bouquets and tributes at Nimoy's Hollywood star.
Fans and well wishers also remembered the late actor at the Chinese Theatre in Hollywood, California.
In this handout from NASA, International Space Station astronaut Terry Virts make the Vulcan salute from Star Trek and the character Spock, while orbiting the Earth on the International Space Station in space.
Nimoy, who had made his illness public last year, attributed it to years of smoking, a habit he had given up three decades earlier.
He had been rushed to the hospital earlier in the week.