Responding officers found the two victims at about 8 p.m. Sunday with multiple stab wounds. The two were near the pool area of an apartment complex in the 2500 block of West Broadway.
The victims were taken to an area hospital, where they were listed in critical condition. Anaheim police said they are expected to survive.
The victims' identities and the extent of their injuries were not immediately disclosed.
A search for the stabbing suspects is under way. Investigators, so far, do not believe the incident is gang related.