diff --git a/src/addrman.h b/src/addrman.h
--- a/src/addrman.h
+++ b/src/addrman.h
@@ -55,7 +55,7 @@
 
     template <typename Stream, typename Operation>
     inline void SerializationOp(Stream &s, Operation ser_action) {
-        READWRITE(*(CAddress *)this);
+        READWRITE(*static_cast<CAddress *>(this));
         READWRITE(source);
         READWRITE(nLastSuccess);
         READWRITE(nAttempts);
diff --git a/src/core_read.cpp b/src/core_read.cpp
--- a/src/core_read.cpp
+++ b/src/core_read.cpp
@@ -31,16 +31,16 @@
                 continue;
             }
 
-            const char *name = GetOpName((opcodetype)op);
+            const char *name = GetOpName(static_cast<opcodetype>(op));
             if (strcmp(name, "OP_UNKNOWN") == 0) {
                 continue;
             }
 
             std::string strName(name);
-            mapOpNames[strName] = (opcodetype)op;
+            mapOpNames[strName] = static_cast<opcodetype>(op);
             // Convenience: OP_ADD and just ADD are both recognized:
             boost::algorithm::replace_first(strName, "OP_", "");
-            mapOpNames[strName] = (opcodetype)op;
+            mapOpNames[strName] = static_cast<opcodetype>(op);
         }
     }
 
diff --git a/src/httpserver.cpp b/src/httpserver.cpp
--- a/src/httpserver.cpp
+++ b/src/httpserver.cpp
@@ -513,7 +513,7 @@
 
 static void httpevent_callback_fn(evutil_socket_t, short, void *data) {
     // Static handler: simply call inner handler
-    HTTPEvent *self = ((HTTPEvent *)data);
+    HTTPEvent *self = static_cast<HTTPEvent *>(data);
     self->handler();
     if (self->deleteWhenTriggered) delete self;
 }
diff --git a/src/net.cpp b/src/net.cpp
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -2109,7 +2109,8 @@
         return;
     }
     if (!pszDest) {
-        if (IsLocal(addrConnect) || FindNode((CNetAddr)addrConnect) ||
+        if (IsLocal(addrConnect) ||
+            FindNode(static_cast<CNetAddr>(addrConnect)) ||
             IsBanned(addrConnect) || FindNode(addrConnect.ToStringIPPort())) {
             return;
         }
diff --git a/src/netaddress.cpp b/src/netaddress.cpp
--- a/src/netaddress.cpp
+++ b/src/netaddress.cpp
@@ -513,7 +513,8 @@
 }
 
 bool operator==(const CService &a, const CService &b) {
-    return (CNetAddr)a == (CNetAddr)b && a.port == b.port;
+    return static_cast<CNetAddr>(a) == static_cast<CNetAddr>(b) &&
+           a.port == b.port;
 }
 
 bool operator<(const CService &a, const CService &b) {
diff --git a/src/primitives/block.h b/src/primitives/block.h
--- a/src/primitives/block.h
+++ b/src/primitives/block.h
@@ -70,14 +70,14 @@
 
     CBlock(const CBlockHeader &header) {
         SetNull();
-        *((CBlockHeader *)this) = header;
+        *(static_cast<CBlockHeader *>(this)) = header;
     }
 
     ADD_SERIALIZE_METHODS;
 
     template <typename Stream, typename Operation>
     inline void SerializationOp(Stream &s, Operation ser_action) {
-        READWRITE(*(CBlockHeader *)this);
+        READWRITE(*static_cast<CBlockHeader *>(this));
         READWRITE(vtx);
     }
 
diff --git a/src/protocol.h b/src/protocol.h
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -395,8 +395,8 @@
             READWRITE(nTime);
         uint64_t nServicesInt = nServices;
         READWRITE(nServicesInt);
-        nServices = (ServiceFlags)nServicesInt;
-        READWRITE(*(CService *)this);
+        nServices = static_cast<ServiceFlags>(nServicesInt);
+        READWRITE(*static_cast<CService *>(this));
     }
 
     // TODO: make private (improves encapsulation)
diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -793,7 +793,7 @@
         WinShutdownMonitor::registerShutdownBlockReason(
             QObject::tr("%1 didn't yet exit safely...")
                 .arg(QObject::tr(PACKAGE_NAME)),
-            (HWND)app.getMainWinId());
+            static_cast<HWND>(app.getMainWinId()));
 #endif
         app.exec();
         app.requestShutdown(config);
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -649,7 +649,7 @@
 #else
     // Note: On Mac, the dock icon is used to provide the tray's functionality.
     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
-    dockIconHandler->setMainWindow((QMainWindow *)this);
+    dockIconHandler->setMainWindow(static_cast<QMainWindow *>(this));
     trayIconMenu = dockIconHandler->dockMenu();
 #endif
 
@@ -978,14 +978,15 @@
             buttons = QMessageBox::Ok;
 
         showNormalIfMinimized();
-        QMessageBox mBox((QMessageBox::Icon)nMBoxIcon, strTitle, message,
-                         buttons, this);
+        QMessageBox mBox(static_cast<QMessageBox::Icon>(nMBoxIcon), strTitle,
+                         message, buttons, this);
         int r = mBox.exec();
         if (ret != nullptr) {
             *ret = r == QMessageBox::Ok;
         }
     } else
-        notificator->notify((Notificator::Class)nNotifyIcon, strTitle, message);
+        notificator->notify(static_cast<Notificator::Class>(nNotifyIcon),
+                            strTitle, message);
 }
 
 void BitcoinGUI::changeEvent(QEvent *e) {
diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -163,9 +163,9 @@
         ui->radioTreeMode->click();
     if (settings.contains("nCoinControlSortColumn") &&
         settings.contains("nCoinControlSortOrder"))
-        sortView(
-            settings.value("nCoinControlSortColumn").toInt(),
-            ((Qt::SortOrder)settings.value("nCoinControlSortOrder").toInt()));
+        sortView(settings.value("nCoinControlSortColumn").toInt(),
+                 (static_cast<Qt::SortOrder>(
+                     settings.value("nCoinControlSortOrder").toInt())));
 }
 
 CoinControlDialog::~CoinControlDialog() {
@@ -467,7 +467,8 @@
         nPayAmount += amount;
 
         if (amount > Amount::zero()) {
-            CTxOut txout(Amount(amount), (CScript)std::vector<uint8_t>(24, 0));
+            CTxOut txout(amount,
+                         static_cast<CScript>(std::vector<uint8_t>(24, 0)));
             txDummy.vout.push_back(txout);
             if (txout.IsDust(dustRelayFee)) {
                 fDust = true;
@@ -556,7 +557,8 @@
             // Never create dust outputs; if we would, just add the dust to the
             // fee.
             if (nChange > Amount::zero() && nChange < MIN_CHANGE) {
-                CTxOut txout(nChange, (CScript)std::vector<uint8_t>(24, 0));
+                CTxOut txout(nChange,
+                             static_cast<CScript>(std::vector<uint8_t>(24, 0)));
                 if (txout.IsDust(dustRelayFee)) {
                     // dust-change will be raised until no dust
                     if (CoinControlDialog::fSubtractFeeFromAmount) {
diff --git a/src/qt/coincontroltreewidget.cpp b/src/qt/coincontroltreewidget.cpp
--- a/src/qt/coincontroltreewidget.cpp
+++ b/src/qt/coincontroltreewidget.cpp
@@ -23,7 +23,7 @@
     {
         event->ignore();
         CoinControlDialog *coinControlDialog =
-            (CoinControlDialog *)this->parentWidget();
+            static_cast<CoinControlDialog *>(this->parentWidget());
         coinControlDialog->done(QDialog::Accepted);
     } else {
         this->QTreeWidget::keyPressEvent(event);
diff --git a/src/qt/sendcoinsdialog.cpp b/src/qt/sendcoinsdialog.cpp
--- a/src/qt/sendcoinsdialog.cpp
+++ b/src/qt/sendcoinsdialog.cpp
@@ -384,7 +384,7 @@
         SEND_CONFIRM_DELAY, this);
     confirmationDialog.exec();
     QMessageBox::StandardButton retval =
-        (QMessageBox::StandardButton)confirmationDialog.result();
+        static_cast<QMessageBox::StandardButton>(confirmationDialog.result());
 
     if (retval != QMessageBox::Yes) {
         fNewRecipientAllowed = true;
diff --git a/src/qt/splashscreen.cpp b/src/qt/splashscreen.cpp
--- a/src/qt/splashscreen.cpp
+++ b/src/qt/splashscreen.cpp
@@ -38,7 +38,8 @@
     float devicePixelRatio = 1.0;
 #if QT_VERSION > 0x050100
     devicePixelRatio =
-        ((QGuiApplication *)QCoreApplication::instance())->devicePixelRatio();
+        static_cast<QGuiApplication *>(QCoreApplication::instance())
+            ->devicePixelRatio();
 #endif
 
     // define text to place
diff --git a/src/qt/transactionview.cpp b/src/qt/transactionview.cpp
--- a/src/qt/transactionview.cpp
+++ b/src/qt/transactionview.cpp
@@ -329,8 +329,8 @@
     }
 
     transactionProxyModel->setWatchOnlyFilter(
-        (TransactionFilterProxy::WatchOnlyFilter)watchOnlyWidget->itemData(idx)
-            .toInt());
+        static_cast<TransactionFilterProxy::WatchOnlyFilter>(
+            watchOnlyWidget->itemData(idx).toInt()));
 }
 
 void TransactionView::changedPrefix(const QString &prefix) {
diff --git a/src/qt/winshutdownmonitor.cpp b/src/qt/winshutdownmonitor.cpp
--- a/src/qt/winshutdownmonitor.cpp
+++ b/src/qt/winshutdownmonitor.cpp
@@ -56,8 +56,9 @@
 void WinShutdownMonitor::registerShutdownBlockReason(const QString &strReason,
                                                      const HWND &mainWinId) {
     typedef BOOL(WINAPI * PSHUTDOWNBRCREATE)(HWND, LPCWSTR);
-    PSHUTDOWNBRCREATE shutdownBRCreate = (PSHUTDOWNBRCREATE)GetProcAddress(
-        GetModuleHandleA("User32.dll"), "ShutdownBlockReasonCreate");
+    PSHUTDOWNBRCREATE shutdownBRCreate =
+        static_cast<PSHUTDOWNBRCREATE>(GetProcAddress(
+            GetModuleHandleA("User32.dll"), "ShutdownBlockReasonCreate"));
     if (shutdownBRCreate == nullptr) {
         qWarning() << "registerShutdownBlockReason: GetProcAddress for "
                       "ShutdownBlockReasonCreate failed";
diff --git a/src/script/script.h b/src/script/script.h
--- a/src/script/script.h
+++ b/src/script/script.h
@@ -558,7 +558,7 @@
             pc += nSize;
         }
 
-        opcodeRet = (opcodetype)opcode;
+        opcodeRet = static_cast<opcodetype>(opcode);
         return true;
     }
 
diff --git a/src/test/versionbits_tests.cpp b/src/test/versionbits_tests.cpp
--- a/src/test/versionbits_tests.cpp
+++ b/src/test/versionbits_tests.cpp
@@ -364,8 +364,8 @@
     const auto chainParams = CreateChainParams(CBaseChainParams::MAIN);
     const Consensus::Params &mainnetParams = chainParams->GetConsensus();
     for (int i = 0; i < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; i++) {
-        uint32_t bitmask =
-            VersionBitsMask(mainnetParams, (Consensus::DeploymentPos)i);
+        uint32_t bitmask = VersionBitsMask(
+            mainnetParams, static_cast<Consensus::DeploymentPos>(i));
         // Make sure that no deployment tries to set an invalid bit.
         BOOST_CHECK_EQUAL(bitmask & ~(uint32_t)VERSIONBITS_TOP_MASK, bitmask);
 
@@ -377,7 +377,8 @@
         // earlier to avoid overlap.)
         for (int j = i + 1; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS;
              j++) {
-            if (VersionBitsMask(mainnetParams, (Consensus::DeploymentPos)j) ==
+            if (VersionBitsMask(mainnetParams,
+                                static_cast<Consensus::DeploymentPos>(j)) ==
                 bitmask) {
                 BOOST_CHECK(mainnetParams.vDeployments[j].nStartTime >
                                 mainnetParams.vDeployments[i].nTimeout ||
diff --git a/src/torcontrol.cpp b/src/torcontrol.cpp
--- a/src/torcontrol.cpp
+++ b/src/torcontrol.cpp
@@ -139,7 +139,7 @@
 }
 
 void TorControlConnection::readcb(struct bufferevent *bev, void *ctx) {
-    TorControlConnection *self = (TorControlConnection *)ctx;
+    TorControlConnection *self = static_cast<TorControlConnection *>(ctx);
     struct evbuffer *input = bufferevent_get_input(bev);
     size_t n_read_out = 0;
     char *line;
@@ -190,7 +190,7 @@
 
 void TorControlConnection::eventcb(struct bufferevent *bev, short what,
                                    void *ctx) {
-    TorControlConnection *self = (TorControlConnection *)ctx;
+    TorControlConnection *self = static_cast<TorControlConnection *>(ctx);
     if (what & BEV_EVENT_CONNECTED) {
         LogPrint(BCLog::TOR, "tor: Successfully connected!\n");
         self->connected(*self);
@@ -766,7 +766,7 @@
 }
 
 void TorController::reconnect_cb(evutil_socket_t fd, short what, void *arg) {
-    TorController *self = (TorController *)arg;
+    TorController *self = static_cast<TorController *>(arg);
     self->Reconnect();
 }
 
diff --git a/src/txdb.h b/src/txdb.h
--- a/src/txdb.h
+++ b/src/txdb.h
@@ -49,7 +49,7 @@
 
     template <typename Stream, typename Operation>
     inline void SerializationOp(Stream &s, Operation ser_action) {
-        READWRITE(*(CDiskBlockPos *)this);
+        READWRITE(*static_cast<CDiskBlockPos *>(this));
         READWRITE(VARINT(nTxOffset));
     }
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -376,7 +376,7 @@
             }
         }
 
-        READWRITE(*(CMerkleTx *)this);
+        READWRITE(*static_cast<CMerkleTx *>(this));
         //!< Used to be vtxPrev
         std::vector<CMerkleTx> vUnused;
         READWRITE(vUnused);