diff --git a/src/core/thread/mle.cpp b/src/core/thread/mle.cpp
index c8acfe313..5c0a9353e 100644
--- a/src/core/thread/mle.cpp
+++ b/src/core/thread/mle.cpp
@@ -3558,15 +3558,10 @@ Error Mle::TxMessage::AppendAddress16Tlv(uint16_t aRloc16) { return Tlv::Append<
 
 Error Mle::TxMessage::AppendLeaderDataTlv(void)
 {
-    LeaderDataTlv leaderDataTlv;
-
     Get<Mle>().mLeaderData.SetDataVersion(Get<NetworkData::Leader>().GetVersion(NetworkData::kFullSet));
     Get<Mle>().mLeaderData.SetStableDataVersion(Get<NetworkData::Leader>().GetVersion(NetworkData::kStableSubset));
 
-    leaderDataTlv.Init();
-    leaderDataTlv.Set(Get<Mle>().mLeaderData);
-
-    return leaderDataTlv.AppendTo(*this);
+    return Tlv::Append<LeaderDataTlv>(*this, LeaderDataTlvValue(Get<Mle>().mLeaderData));
 }
 
 Error Mle::TxMessage::AppendNetworkDataTlv(NetworkData::Type aType)
@@ -4066,12 +4061,11 @@ exit:
 
 Error Mle::RxMessage::ReadLeaderDataTlv(LeaderData &aLeaderData) const
 {
-    Error         error;
-    LeaderDataTlv leaderDataTlv;
+    Error              error;
+    LeaderDataTlvValue tlvValue;
 
-    SuccessOrExit(error = Tlv::FindTlv(*this, leaderDataTlv));
-    VerifyOrExit(leaderDataTlv.IsValid(), error = kErrorParse);
-    leaderDataTlv.Get(aLeaderData);
+    SuccessOrExit(error = Tlv::Find<LeaderDataTlv>(*this, tlvValue));
+    tlvValue.Get(aLeaderData);
 
 exit:
     return error;
diff --git a/src/core/thread/mle_tlvs.cpp b/src/core/thread/mle_tlvs.cpp
index 050e145a6..bd07d0484 100644
--- a/src/core/thread/mle_tlvs.cpp
+++ b/src/core/thread/mle_tlvs.cpp
@@ -137,5 +137,23 @@ exit:
     return isValid;
 }
 
+LeaderDataTlvValue::LeaderDataTlvValue(const LeaderData &aLeaderData)
+    : mPartitionId(BigEndian::HostSwap32(aLeaderData.GetPartitionId()))
+    , mWeighting(aLeaderData.GetWeighting())
+    , mDataVersion(aLeaderData.GetDataVersion(NetworkData::kFullSet))
+    , mStableDataVersion(aLeaderData.GetDataVersion(NetworkData::kStableSubset))
+    , mLeaderRouterId(aLeaderData.GetLeaderRouterId())
+{
+}
+
+void LeaderDataTlvValue::Get(LeaderData &aLeaderData) const
+{
+    aLeaderData.SetPartitionId(BigEndian::HostSwap32(mPartitionId));
+    aLeaderData.SetWeighting(mWeighting);
+    aLeaderData.SetDataVersion(mDataVersion);
+    aLeaderData.SetStableDataVersion(mStableDataVersion);
+    aLeaderData.SetLeaderRouterId(mLeaderRouterId);
+}
+
 } // namespace Mle
 } // namespace ot
diff --git a/src/core/thread/mle_tlvs.hpp b/src/core/thread/mle_tlvs.hpp
index 7491c0876..353f21ade 100644
--- a/src/core/thread/mle_tlvs.hpp
+++ b/src/core/thread/mle_tlvs.hpp
@@ -584,56 +584,30 @@ private:
 #endif // OPENTHREAD_CONFIG_MLE_LONG_ROUTES_ENABLE
 
 /**
- * Implements Leader Data TLV generation and parsing.
+ * Represents Leader Data TLV value.
  */
 OT_TOOL_PACKED_BEGIN
-class LeaderDataTlv : public Tlv, public TlvInfo<Tlv::kLeaderData>
+class LeaderDataTlvValue
 {
 public:
     /**
-     * Initializes the TLV.
+     * Default constructor.
      */
-    void Init(void)
-    {
-        SetType(kLeaderData);
-        SetLength(sizeof(*this) - sizeof(Tlv));
-    }
+    LeaderDataTlvValue(void) = default;
 
     /**
-     * Indicates whether or not the TLV appears to be well-formed.
+     * Initializes the `LeaderDataTlvValue` from a given `LeaderData`.
      *
-     * @retval TRUE   If the TLV appears to be well-formed.
-     * @retval FALSE  If the TLV does not appear to be well-formed.
+     * @param[in] aLeaderData  The `LeaderData` info to use for initialization.
      */
-    bool IsValid(void) const { return GetLength() >= sizeof(*this) - sizeof(Tlv); }
+    explicit LeaderDataTlvValue(const LeaderData &aLeaderData);
 
     /**
-     * Gets the Leader Data info from TLV.
+     * Gets the Leader Data info from TLV value.
      *
      * @param[out] aLeaderData   A reference to output Leader Data info.
      */
-    void Get(LeaderData &aLeaderData) const
-    {
-        aLeaderData.SetPartitionId(BigEndian::HostSwap32(mPartitionId));
-        aLeaderData.SetWeighting(mWeighting);
-        aLeaderData.SetDataVersion(mDataVersion);
-        aLeaderData.SetStableDataVersion(mStableDataVersion);
-        aLeaderData.SetLeaderRouterId(mLeaderRouterId);
-    }
-
-    /**
-     * Sets the Leader Data.
-     *
-     * @param[in] aLeaderData   A Leader Data.
-     */
-    void Set(const LeaderData &aLeaderData)
-    {
-        mPartitionId       = BigEndian::HostSwap32(aLeaderData.GetPartitionId());
-        mWeighting         = aLeaderData.GetWeighting();
-        mDataVersion       = aLeaderData.GetDataVersion(NetworkData::kFullSet);
-        mStableDataVersion = aLeaderData.GetDataVersion(NetworkData::kStableSubset);
-        mLeaderRouterId    = aLeaderData.GetLeaderRouterId();
-    }
+    void Get(LeaderData &aLeaderData) const;
 
 private:
     uint32_t mPartitionId;
@@ -643,6 +617,11 @@ private:
     uint8_t  mLeaderRouterId;
 } OT_TOOL_PACKED_END;
 
+/**
+ * Defines Leader Data TLV constants and types.
+ */
+typedef SimpleTlvInfo<Tlv::kLeaderData, LeaderDataTlvValue> LeaderDataTlv;
+
 /**
  * Implements Scan Mask TLV generation and parsing.
  */
diff --git a/src/core/thread/network_diagnostic.cpp b/src/core/thread/network_diagnostic.cpp
index 114447b8b..6cb4a7994 100644
--- a/src/core/thread/network_diagnostic.cpp
+++ b/src/core/thread/network_diagnostic.cpp
@@ -473,14 +473,8 @@ Error Server::AppendDiagTlv(uint8_t aTlvType, Message &aMessage)
         break;
 
     case Tlv::kLeaderData:
-    {
-        LeaderDataTlv tlv;
-
-        tlv.Init();
-        tlv.Set(Get<Mle::Mle>().GetLeaderData());
-        error = tlv.AppendTo(aMessage);
+        error = Tlv::Append<LeaderDataTlv>(aMessage, LeaderDataTlvValue(Get<Mle::Mle>().GetLeaderData()));
         break;
-    }
 
     case Tlv::kNetworkData:
         error = Tlv::Append<NetworkDataTlv>(aMessage, Get<NetworkData::Leader>().GetBytes(),
@@ -1351,12 +1345,10 @@ Error Client::GetNextDiagTlv(const Coap::Message &aMessage, Iterator &aIterator,
 
         case Tlv::kLeaderData:
         {
-            LeaderDataTlv leaderDataTlv;
+            LeaderDataTlvValue tlvValue;
 
-            VerifyOrExit(!tlv.IsExtended(), error = kErrorParse);
-            SuccessOrExit(error = aMessage.Read(offset, leaderDataTlv));
-            VerifyOrExit(leaderDataTlv.IsValid(), error = kErrorParse);
-            leaderDataTlv.Get(AsCoreType(&aTlvInfo.mData.mLeaderData));
+            SuccessOrExit(error = Tlv::Read<LeaderDataTlv>(aMessage, offset, tlvValue));
+            tlvValue.Get(AsCoreType(&aTlvInfo.mData.mLeaderData));
             break;
         }
 
diff --git a/src/core/thread/network_diagnostic_tlvs.hpp b/src/core/thread/network_diagnostic_tlvs.hpp
index 92c042f4e..95b8b494e 100644
--- a/src/core/thread/network_diagnostic_tlvs.hpp
+++ b/src/core/thread/network_diagnostic_tlvs.hpp
@@ -336,23 +336,14 @@ public:
 } OT_TOOL_PACKED_END;
 
 /**
- * Implements Leader Data TLV generation and parsing.
+ * Represents a Leader Data TLV value.
  */
-OT_TOOL_PACKED_BEGIN
-class LeaderDataTlv : public Mle::LeaderDataTlv
-{
-public:
-    static constexpr uint8_t kType = ot::NetworkDiagnostic::Tlv::kLeaderData; ///< The TLV Type value.
+typedef Mle::LeaderDataTlvValue LeaderDataTlvValue;
 
-    /**
-     * Initializes the TLV.
-     */
-    void Init(void)
-    {
-        Mle::LeaderDataTlv::Init();
-        ot::Tlv::SetType(kType);
-    }
-} OT_TOOL_PACKED_END;
+/**
+ * Defines Leader Data TLV constants and types.
+ */
+typedef SimpleTlvInfo<Tlv::kLeaderData, LeaderDataTlvValue> LeaderDataTlv;
 
 /**
  * Implements Mac Counters TLV generation and parsing.