Can anyone please give me names of some sci-fi and action animes?

Try these:
-Akira
-Ghost in the Shell
-Megazone 23
-Psycho Pass
-Gundam (start with 0079)
-Cowboy Bebop

1.Heavy Object(Future)

2.Phantasy 星, つ星 Online 2: The Animation(Future)

3.Valvrave

4.Muv-Luv Alternative

5.Captain Earth

6.Martian Successor Nadesico

7.M3: The Dark Metal

Steins;Gate

It's only sic-fi, not exactly action.