diff --git a/changelog/15405.txt b/changelog/15405.txt
new file mode 100644
index 000000000000..eb98386335a8
--- /dev/null
+++ b/changelog/15405.txt
@@ -0,0 +1,3 @@
+```release-note:improvement
+command: Support optional '-log-level' flag to be passed to 'operator migrate' command (defaults to info). Also support VAULT_LOG_LEVEL env var.
+```
\ No newline at end of file
diff --git a/command/agent.go b/command/agent.go
index 6bafd4cb072d..bc074afd0f27 100644
--- a/command/agent.go
+++ b/command/agent.go
@@ -127,9 +127,9 @@ func (c *AgentCommand) Flags() *FlagSets {
 		Target:     &c.flagLogLevel,
 		Default:    "info",
 		EnvVar:     "VAULT_LOG_LEVEL",
-		Completion: complete.PredictSet("trace", "debug", "info", "warn", "err"),
+		Completion: complete.PredictSet("trace", "debug", "info", "warn", "error"),
 		Usage: "Log verbosity level. Supported values (in order of detail) are " +
-			"\"trace\", \"debug\", \"info\", \"warn\", and \"err\".",
+			"\"trace\", \"debug\", \"info\", \"warn\", and \"error\".",
 	})
 
 	f.BoolVar(&BoolVar{
diff --git a/command/operator_migrate.go b/command/operator_migrate.go
index 1931584bc3f4..5dcec8a56ed6 100644
--- a/command/operator_migrate.go
+++ b/command/operator_migrate.go
@@ -11,6 +11,7 @@ import (
 	"time"
 
 	log "github.com/hashicorp/go-hclog"
+	"github.com/hashicorp/go-secure-stdlib/strutil"
 	"github.com/hashicorp/hcl"
 	"github.com/hashicorp/hcl/hcl/ast"
 	"github.com/hashicorp/vault/command/server"
@@ -35,6 +36,7 @@ type OperatorMigrateCommand struct {
 
 	PhysicalBackends map[string]physical.Factory
 	flagConfig       string
+	flagLogLevel     string
 	flagStart        string
 	flagReset        bool
 	logger           log.Logger
@@ -96,6 +98,16 @@ func (c *OperatorMigrateCommand) Flags() *FlagSets {
 		Usage:  "Reset the migration lock. No migration will occur.",
 	})
 
+	f.StringVar(&StringVar{
+		Name:       "log-level",
+		Target:     &c.flagLogLevel,
+		Default:    "info",
+		EnvVar:     "VAULT_LOG_LEVEL",
+		Completion: complete.PredictSet("trace", "debug", "info", "warn", "error"),
+		Usage: "Log verbosity level. Supported values (in order of detail) are " +
+			"\"trace\", \"debug\", \"info\", \"warn\", and \"error\". These are not case sensitive.",
+	})
+
 	return set
 }
 
@@ -108,7 +120,6 @@ func (c *OperatorMigrateCommand) AutocompleteFlags() complete.Flags {
 }
 
 func (c *OperatorMigrateCommand) Run(args []string) int {
-	c.logger = logging.NewVaultLogger(log.Info)
 	f := c.Flags()
 
 	if err := f.Parse(args); err != nil {
@@ -116,6 +127,14 @@ func (c *OperatorMigrateCommand) Run(args []string) int {
 		return 1
 	}
 
+	c.flagLogLevel = strings.ToLower(c.flagLogLevel)
+	validLevels := []string{"trace", "debug", "info", "warn", "error"}
+	if !strutil.StrListContains(validLevels, c.flagLogLevel) {
+		c.UI.Error(fmt.Sprintf("%s is an unknown log level. Valid log levels are: %s", c.flagLogLevel, validLevels))
+		return 1
+	}
+	c.logger = logging.NewVaultLogger(log.LevelFromString(c.flagLogLevel))
+
 	if c.flagConfig == "" {
 		c.UI.Error("Must specify exactly one config path using -config")
 		return 1
diff --git a/command/server.go b/command/server.go
index 1b0a3231a9c8..5404468b74dd 100644
--- a/command/server.go
+++ b/command/server.go
@@ -189,9 +189,9 @@ func (c *ServerCommand) Flags() *FlagSets {
 		Target:     &c.flagLogLevel,
 		Default:    notSetValue,
 		EnvVar:     "VAULT_LOG_LEVEL",
-		Completion: complete.PredictSet("trace", "debug", "info", "warn", "err"),
+		Completion: complete.PredictSet("trace", "debug", "info", "warn", "error"),
 		Usage: "Log verbosity level. Supported values (in order of detail) are " +
-			"\"trace\", \"debug\", \"info\", \"warn\", and \"err\".",
+			"\"trace\", \"debug\", \"info\", \"warn\", and \"error\".",
 	})
 
 	f.StringVar(&StringVar{