diff --git a/plugins/outputs/all/riemann_legacy.go b/plugins/outputs/all/riemann_legacy.go
deleted file mode 100644
index a593ddd0585a5..0000000000000
--- a/plugins/outputs/all/riemann_legacy.go
+++ /dev/null
@@ -1,5 +0,0 @@
-//go:build !custom || outputs || outputs.riemann_legacy
-
-package all
-
-import _ "github.com/influxdata/telegraf/plugins/outputs/riemann_legacy" // register plugin
diff --git a/plugins/outputs/riemann_legacy/README.md b/plugins/outputs/riemann_legacy/README.md
deleted file mode 100644
index 4a99a3b8bc848..0000000000000
--- a/plugins/outputs/riemann_legacy/README.md
+++ /dev/null
@@ -1,28 +0,0 @@
-# Riemann Legacy Output Plugin
-
-This is a deprecated plugin. Please use the [Riemann Output Plugin][new]
-instead.
-
-[new]: ../riemann/README.md
-
-## Global configuration options <!-- @/docs/includes/plugin_config.md -->
-
-In addition to the plugin-specific configuration settings, plugins support
-additional global and plugin configuration settings. These settings are used to
-modify metrics, tags, and field or create aliases and configure ordering, etc.
-See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
-
-[CONFIGURATION.md]: ../../../docs/CONFIGURATION.md#plugins
-
-## Configuration
-
-```toml @sample.conf
-# Configuration for the Riemann server to send metrics to
-[[outputs.riemann_legacy]]
-  ## URL of server
-  url = "localhost:5555"
-  ## transport protocol to use either tcp or udp
-  transport = "tcp"
-  ## separator to use between input name and field name in Riemann service name
-  separator = " "
-```
diff --git a/plugins/outputs/riemann_legacy/riemann_legacy.go b/plugins/outputs/riemann_legacy/riemann_legacy.go
deleted file mode 100644
index 299f94a7ba805..0000000000000
--- a/plugins/outputs/riemann_legacy/riemann_legacy.go
+++ /dev/null
@@ -1,147 +0,0 @@
-//go:generate ../../../tools/readme_config_includer/generator
-package riemann_legacy
-
-import (
-	_ "embed"
-	"fmt"
-	"os"
-	"sort"
-	"strings"
-
-	"github.com/amir/raidman"
-
-	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/plugins/outputs"
-)
-
-//go:embed sample.conf
-var sampleConfig string
-
-const deprecationMsg = "Error: this Riemann output plugin will be deprecated in a future release, " +
-	"see https://github.com/influxdata/telegraf/issues/1878 for more details & discussion."
-
-type Riemann struct {
-	URL       string          `toml:"url"`
-	Transport string          `toml:"transport"`
-	Separator string          `toml:"separator"`
-	Log       telegraf.Logger `toml:"-"`
-
-	client *raidman.Client
-}
-
-func (*Riemann) SampleConfig() string {
-	return sampleConfig
-}
-
-func (r *Riemann) Connect() error {
-	r.Log.Error(deprecationMsg)
-	c, err := raidman.Dial(r.Transport, r.URL)
-
-	if err != nil {
-		r.client = nil
-		return err
-	}
-
-	r.client = c
-	return nil
-}
-
-func (r *Riemann) Close() error {
-	if r.client == nil {
-		return nil
-	}
-	err := r.client.Close()
-	r.client = nil
-	return err
-}
-
-func (r *Riemann) Write(metrics []telegraf.Metric) error {
-	r.Log.Error(deprecationMsg)
-	if len(metrics) == 0 {
-		return nil
-	}
-
-	if r.client == nil {
-		err := r.Connect()
-		if err != nil {
-			return fmt.Errorf("failed to (re)connect to Riemann: %w", err)
-		}
-	}
-
-	var events []*raidman.Event
-	for _, p := range metrics {
-		evs := buildEvents(p, r.Separator)
-		events = append(events, evs...)
-	}
-
-	var senderr = r.client.SendMulti(events)
-	if senderr != nil {
-		r.Close()
-		return fmt.Errorf("failed to send riemann message (will try to reconnect): %w", senderr)
-	}
-
-	return nil
-}
-
-func buildEvents(p telegraf.Metric, s string) []*raidman.Event {
-	events := []*raidman.Event{}
-	for fieldName, value := range p.Fields() {
-		host, ok := p.Tags()["host"]
-		if !ok {
-			hostname, err := os.Hostname()
-			if err != nil {
-				host = "unknown"
-			} else {
-				host = hostname
-			}
-		}
-
-		event := &raidman.Event{
-			Host:    host,
-			Service: serviceName(s, p.Name(), p.Tags(), fieldName),
-		}
-
-		switch value := value.(type) {
-		case string:
-			event.State = value
-		default:
-			event.Metric = value
-		}
-
-		events = append(events, event)
-	}
-
-	return events
-}
-
-func serviceName(s string, n string, t map[string]string, f string) string {
-	serviceStrings := []string{}
-	serviceStrings = append(serviceStrings, n)
-
-	// we'll skip the 'host' tag
-	tagStrings := []string{}
-	tagNames := []string{}
-
-	for tagName := range t {
-		tagNames = append(tagNames, tagName)
-	}
-	sort.Strings(tagNames)
-
-	for _, tagName := range tagNames {
-		if tagName != "host" {
-			tagStrings = append(tagStrings, t[tagName])
-		}
-	}
-	var tagString = strings.Join(tagStrings, s)
-	if tagString != "" {
-		serviceStrings = append(serviceStrings, tagString)
-	}
-	serviceStrings = append(serviceStrings, f)
-	return strings.Join(serviceStrings, s)
-}
-
-func init() {
-	outputs.Add("riemann_legacy", func() telegraf.Output {
-		return &Riemann{}
-	})
-}
diff --git a/plugins/outputs/riemann_legacy/riemann_legacy_test.go b/plugins/outputs/riemann_legacy/riemann_legacy_test.go
deleted file mode 100644
index cda74c2c46acf..0000000000000
--- a/plugins/outputs/riemann_legacy/riemann_legacy_test.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package riemann_legacy
-
-import (
-	"fmt"
-	"testing"
-
-	"github.com/docker/go-connections/nat"
-	"github.com/stretchr/testify/require"
-	"github.com/testcontainers/testcontainers-go/wait"
-
-	"github.com/influxdata/telegraf/testutil"
-)
-
-func TestConnectAndWrite(t *testing.T) {
-	if testing.Short() {
-		t.Skip("Skipping integration test in short mode")
-	}
-
-	servicePort := "5555"
-	container := testutil.Container{
-		Image:        "rlister/riemann",
-		ExposedPorts: []string{servicePort},
-		WaitingFor: wait.ForAll(
-			wait.ForLog("Hyperspace core online"),
-			wait.ForListeningPort(nat.Port(servicePort)),
-		),
-	}
-	err := container.Start()
-	require.NoError(t, err, "failed to start container")
-	defer container.Terminate()
-
-	url := fmt.Sprintf("%s:%s", container.Address, container.Ports[servicePort])
-
-	r := &Riemann{
-		URL:       url,
-		Transport: "tcp",
-		Log:       testutil.Logger{},
-	}
-
-	err = r.Connect()
-	require.NoError(t, err)
-
-	err = r.Write(testutil.MockMetrics())
-	require.NoError(t, err)
-}
diff --git a/plugins/outputs/riemann_legacy/sample.conf b/plugins/outputs/riemann_legacy/sample.conf
deleted file mode 100644
index da68140d21b14..0000000000000
--- a/plugins/outputs/riemann_legacy/sample.conf
+++ /dev/null
@@ -1,8 +0,0 @@
-# Configuration for the Riemann server to send metrics to
-[[outputs.riemann_legacy]]
-  ## URL of server
-  url = "localhost:5555"
-  ## transport protocol to use either tcp or udp
-  transport = "tcp"
-  ## separator to use between input name and field name in Riemann service name
-  separator = " "