diff --git a/.chloggen/support-host-proc-env-var-on-awscontainerinsightreceiver.yaml b/.chloggen/support-host-proc-env-var-on-awscontainerinsightreceiver.yaml
new file mode 100644
index 000000000000..4b86edd2ba78
--- /dev/null
+++ b/.chloggen/support-host-proc-env-var-on-awscontainerinsightreceiver.yaml
@@ -0,0 +1,11 @@
+change_type: enhancement
+
+component: awscontainerinsightreceiver
+
+note: Add support for HOST_PROC environment variable in AWS Container Insight Receiver.
+
+issues: [35862]
+
+subtext:
+
+change_logs: [user]
diff --git a/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity.go b/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity.go
index 7cf5092b77b3..ed4b84022efa 100644
--- a/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity.go
+++ b/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity.go
@@ -43,10 +43,15 @@ func newNodeCapacity(logger *zap.Logger, options ...nodeCapacityOption) (nodeCap
 		opt(nc)
 	}
 
-	if _, err := nc.osLstat(hostProc); os.IsNotExist(err) {
+	actualHostProc, ok := os.LookupEnv(string(common.HostProcEnvKey))
+	if !ok {
+		actualHostProc = hostProc
+	}
+
+	if _, err := nc.osLstat(actualHostProc); os.IsNotExist(err) {
 		return nil, err
 	}
-	envMap := common.EnvMap{common.HostProcEnvKey: hostProc}
+	envMap := common.EnvMap{common.HostProcEnvKey: actualHostProc}
 	ctx := context.WithValue(context.Background(), common.EnvKey, envMap)
 
 	nc.parseCPU(ctx)
diff --git a/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity_test.go b/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity_test.go
index d54f0dbb1f49..b574c48a7ffd 100644
--- a/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity_test.go
+++ b/receiver/awscontainerinsightreceiver/internal/host/nodeCapacity_test.go
@@ -9,6 +9,7 @@ import (
 	"os"
 	"testing"
 
+	"github.com/shirou/gopsutil/v4/common"
 	"github.com/shirou/gopsutil/v4/cpu"
 	"github.com/shirou/gopsutil/v4/mem"
 	"github.com/stretchr/testify/assert"
@@ -71,3 +72,19 @@ func TestNodeCapacity(t *testing.T) {
 	assert.Equal(t, int64(1024), nc.getMemoryCapacity())
 	assert.Equal(t, int64(2), nc.getNumCores())
 }
+
+func TestNodeCapacity_ReadsHostProcEnvVar(t *testing.T) {
+	const customHostProc = "/custom/host/proc"
+	t.Setenv(string(common.HostProcEnvKey), customHostProc)
+
+	lstatOption := func(nc *nodeCapacity) {
+		nc.osLstat = func(name string) (os.FileInfo, error) {
+			assert.Equal(t, customHostProc, name)
+			return nil, nil
+		}
+	}
+
+	nc, err := newNodeCapacity(zap.NewNop(), lstatOption)
+	assert.NoError(t, err)
+	assert.NotNil(t, nc)
+}