diff --git a/globals.go b/globals.go
index 9da6ae01..80f036ac 100644
--- a/globals.go
+++ b/globals.go
@@ -19,6 +19,10 @@ const (
 	// TimeFormatUnixMicro defines a time format that makes time fields to be
 	// serialized as Unix timestamp integers in microseconds.
 	TimeFormatUnixMicro = "UNIXMICRO"
+
+	// TimeFormatUnixNano defines a time format that makes time fields to be
+	// serialized as Unix timestamp integers in nanoseconds.
+	TimeFormatUnixNano = "UNIXNANO"
 )
 
 var (
@@ -81,7 +85,7 @@ var (
 	InterfaceMarshalFunc = json.Marshal
 
 	// TimeFieldFormat defines the time format of the Time field type. If set to
-	// TimeFormatUnix, TimeFormatUnixMs or TimeFormatUnixMicro, the time is formatted as a UNIX
+	// TimeFormatUnix, TimeFormatUnixMs, TimeFormatUnixMicro or TimeFormatUnixNano, the time is formatted as a UNIX
 	// timestamp as integer.
 	TimeFieldFormat = time.RFC3339
 
diff --git a/internal/json/time.go b/internal/json/time.go
index 5aff6be3..6a8dc912 100644
--- a/internal/json/time.go
+++ b/internal/json/time.go
@@ -7,9 +7,10 @@ import (
 
 const (
 	// Import from zerolog/global.go
-	timeFormatUnix   = ""
-	timeFormatUnixMs = "UNIXMS"
+	timeFormatUnix      = ""
+	timeFormatUnixMs    = "UNIXMS"
 	timeFormatUnixMicro = "UNIXMICRO"
+	timeFormatUnixNano  = "UNIXNANO"
 )
 
 // AppendTime formats the input time with the given format
@@ -22,6 +23,8 @@ func (e Encoder) AppendTime(dst []byte, t time.Time, format string) []byte {
 		return e.AppendInt64(dst, t.UnixNano()/1000000)
 	case timeFormatUnixMicro:
 		return e.AppendInt64(dst, t.UnixNano()/1000)
+	case timeFormatUnixNano:
+		return e.AppendInt64(dst, t.UnixNano())
 	}
 	return append(t.AppendFormat(append(dst, '"'), format), '"')
 }
@@ -33,7 +36,11 @@ func (Encoder) AppendTimes(dst []byte, vals []time.Time, format string) []byte {
 	case timeFormatUnix:
 		return appendUnixTimes(dst, vals)
 	case timeFormatUnixMs:
-		return appendUnixMsTimes(dst, vals)
+		return appendUnixNanoTimes(dst, vals, 1000000)
+	case timeFormatUnixMicro:
+		return appendUnixNanoTimes(dst, vals, 1000)
+	case timeFormatUnixNano:
+		return appendUnixNanoTimes(dst, vals, 1)
 	}
 	if len(vals) == 0 {
 		return append(dst, '[', ']')
@@ -64,15 +71,15 @@ func appendUnixTimes(dst []byte, vals []time.Time) []byte {
 	return dst
 }
 
-func appendUnixMsTimes(dst []byte, vals []time.Time) []byte {
+func appendUnixNanoTimes(dst []byte, vals []time.Time, div int64) []byte {
 	if len(vals) == 0 {
 		return append(dst, '[', ']')
 	}
 	dst = append(dst, '[')
-	dst = strconv.AppendInt(dst, vals[0].UnixNano()/1000000, 10)
+	dst = strconv.AppendInt(dst, vals[0].UnixNano()/div, 10)
 	if len(vals) > 1 {
 		for _, t := range vals[1:] {
-			dst = strconv.AppendInt(append(dst, ','), t.UnixNano()/1000000, 10)
+			dst = strconv.AppendInt(append(dst, ','), t.UnixNano()/div, 10)
 		}
 	}
 	dst = append(dst, ']')