The Laa River is a river in Sulawesi, Indonesia, about 1700 km northeast of the capital Jakarta.

The Laa River empties into the Gulf of Mori. The Ta Pamona live along the river as well as the To Mori, who settled on the lower section of the river.

The river flows in the eastern area of Sulawesi which has a predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification). The annual average temperature in the area is 23 °C. The warmest month is February, when the average temperature is around 26 °C, and the coldest is July, at 21 °C. The average annual rainfall is 4154 mm. The wettest month is April, with an average of 522 mm rainfall, and the driest is October, with 94 mm rainfall.

Laa River
Climate chart (explanation)
J F M A M J J A S O N D     450     24 21     332     26 25     482     26 20     522     25 22     479     25 19     473     23 21     516     23 19     160     23 20     105     27 21     94     28 22     199     27 21     342     25 22 █ Average max. and min. temperatures in °C █ Precipitation totals in mm Source:
Imperial conversion J F M A M J J A S O N D     18     75 70     13     79 77     19     79 68     21     77 72     19     77 66     19     73 70     20     73 66     6.3     73 68     4.1     81 70     3.7     82 72     7.8     81 70     13     77 72 █ Average max. and min. temperatures in °F █ Precipitation totals in inches

• List of drainage basins of Indonesia
• List of rivers of Indonesia
• List of rivers of Sulawesi
• Poso River
• Lake Poso

2°01′41″S 121°28′56″E / 2.0280°S 121.4823°E / -2.0280; 121.4823