Manuel Alejandro Neira Díaz (born 12 October 1977) is a retired Chilean football player who played as a striker.

[1] From 1997 to 1998, Neira was consolidated as player in Colo-Colo, winning the Primera División Chilena title in two consecutive occasions, the 1997 and 1998 season.

[4] During the summer of 2001, Neira was transferred to Unión Española, where he made a notable performance scoring 11 goals in 17 games, being one of the top-scorer of the Torneo Apertura.

In his second game for the team, in the Channel One Cup, he was injured severely by CSKA Moscow player Elvir Rahimić.

Neira suffered two fractures in his ankle, and had to sit out for the rest of the season before he even played a single league game for Hapoel.

In December 2007, he tried his luck at the Süper Lig club Gaziantepspor, Neira only trained with them for a couple of weeks, but was not liked by the coach, and returned to Unión Española.

The first international appearance with Chile national football team was in the FIFA U-17 World Championship 1993 celebrated in Japan.

He participate in the Chile national under-20 football team, he played in the South American Youth Championship in the years 1995 and 1997.