Ahvenajärv
Ahvenajärv
Coordinates	58°05′14″N 26°27′41″E / 58.0871°N 26.4615°E / 58.0871; 26.4615
Basin countries	Estonia
Max. length	110 meters (360 ft)
Surface area	0.9 hectares (2.2 acres)
Average depth	5.0 meters (16.4 ft)
Max. depth	11.0 meters (36.1 ft)
Water volume	46,000 cubic meters (1,600,000 cu ft)
Shore length1	340 meters (1,120 ft)
Surface elevation	69.7 meters (229 ft)
1 Shore length is not a well-defined measure.

Ahvenajärv (also Nelijärve Ahvenajärv, Aegviidu Ahvenjärv, or Linaleo järv) is a lake in Estonia. It is located in Mustjõe in Anija Parish, Harju County. It is one of the seven Nelijärve Lakes [et].

The lake has an area of 0.9 hectares (2.2 acres). The lake has an average depth of 5.0 meters (16.4 ft) and a maximum depth of 11.0 meters (36.1 ft). It is 110 meters (360 ft) long, and its shoreline measures 340 meters (1,120 ft). It has a volume of 46,000 cubic meters (1,600,000 cu ft).^[1]

• List of lakes of Estonia