diff --git a/.chloggen/testbed-configurable-executable.yaml b/.chloggen/testbed-configurable-executable.yaml
new file mode 100755
index 000000000000..1a938cdc6f3e
--- /dev/null
+++ b/.chloggen/testbed-configurable-executable.yaml
@@ -0,0 +1,20 @@
+# Use this changelog template to create an entry for release notes.
+# If your change doesn't affect end users, such as a test fix or a tooling change,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: testbed
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add `WithAgentExePath`, which allows setting the path of the Collector executable.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [23258]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
diff --git a/testbed/testbed/child_process_collector.go b/testbed/testbed/child_process_collector.go
index 90b4c39f6bb0..cfed36685cbb 100644
--- a/testbed/testbed/child_process_collector.go
+++ b/testbed/testbed/child_process_collector.go
@@ -30,7 +30,7 @@ type childProcessCollector struct {
 	// Path to agent executable. If unset the default executable in
 	// bin/otelcol_{{.GOOS}}_{{.GOARCH}} will be used.
 	// Can be set for example to use the unstable executable for a specific test.
-	AgentExePath string
+	agentExePath string
 
 	// Descriptive name of the process
 	name string
@@ -81,9 +81,24 @@ type childProcessCollector struct {
 	ramMiBMax uint32
 }
 
-// NewChildProcessCollector crewtes a new OtelcolRunner as a child process on the same machine executing the test.
-func NewChildProcessCollector() OtelcolRunner {
-	return &childProcessCollector{}
+type ChildProcessOption func(*childProcessCollector)
+
+// NewChildProcessCollector creates a new OtelcolRunner as a child process on the same machine executing the test.
+func NewChildProcessCollector(options ...ChildProcessOption) OtelcolRunner {
+	col := &childProcessCollector{}
+
+	for _, option := range options {
+		option(col)
+	}
+
+	return col
+}
+
+// WithAgentExePath sets the path of the Collector executable
+func WithAgentExePath(exePath string) ChildProcessOption {
+	return func(cpc *childProcessCollector) {
+		cpc.agentExePath = exePath
+	}
 }
 
 func (cp *childProcessCollector) PrepareConfig(configStr string) (configCleanup func(), err error) {
@@ -155,10 +170,10 @@ func (cp *childProcessCollector) Start(params StartParams) error {
 	cp.doneSignal = make(chan struct{})
 	cp.resourceSpec = params.resourceSpec
 
-	if cp.AgentExePath == "" {
-		cp.AgentExePath = GlobalConfig.DefaultAgentExeRelativeFile
+	if cp.agentExePath == "" {
+		cp.agentExePath = GlobalConfig.DefaultAgentExeRelativeFile
 	}
-	exePath := expandExeFileName(cp.AgentExePath)
+	exePath := expandExeFileName(cp.agentExePath)
 	exePath, err := filepath.Abs(exePath)
 	if err != nil {
 		return err
diff --git a/testbed/testbed/child_process_collector_test.go b/testbed/testbed/child_process_collector_test.go
new file mode 100644
index 000000000000..24a58f1bcbf1
--- /dev/null
+++ b/testbed/testbed/child_process_collector_test.go
@@ -0,0 +1,20 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package testbed // import "github.com/open-telemetry/opentelemetry-collector-contrib/testbed/testbed"
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestAgentExeOption(t *testing.T) {
+	path := "bin/otelcontribcol"
+	col := NewChildProcessCollector(WithAgentExePath(path))
+
+	cpc, ok := col.(*childProcessCollector)
+
+	require.True(t, ok)
+	require.Equal(t, path, cpc.agentExePath)
+}