Lucescu, who coached Pirlo at Brescia and Inter Milan early in his career, said that the award would have been a fitting way to cap a superb career.
The Romanian veteran said: "I know Pirlo very well. When I worked at Brescia, he was 15 and a half and was already attracting attention.
"We have stayed in contact since. His development has been exceptional and I am convinced that, with all he has done last year in the league and for Italy, he deserved to win the Ballon d'Or.
"He should have won it to crown his career. Pirlo is in great form, and for me, he is always number one."
Pirlo has helped guide Juve toward a 45-match unbeaten run in the league, which sees the reigning champions top Serie A early in the season.