diff --git a/packages/core/src/types-hoist/envelope.ts b/packages/core/src/types-hoist/envelope.ts
index 5a54ffc7b8c2..d78cccc8384a 100644
--- a/packages/core/src/types-hoist/envelope.ts
+++ b/packages/core/src/types-hoist/envelope.ts
@@ -5,6 +5,7 @@ import type { LegacyCSPReport } from './csp';
 import type { DsnComponents } from './dsn';
 import type { Event } from './event';
 import type { FeedbackEvent, UserFeedback } from './feedback';
+import type { Log } from './log';
 import type { Profile, ProfileChunk } from './profiling';
 import type { ReplayEvent, ReplayRecordingData } from './replay';
 import type { SdkInfo } from './sdkinfo';
@@ -43,6 +44,7 @@ export type EnvelopeItemType =
   | 'replay_recording'
   | 'check_in'
   | 'span'
+  | 'otel_log'
   | 'raw_security';
 
 export type BaseEnvelopeHeaders = {
@@ -85,6 +87,7 @@ type CheckInItemHeaders = { type: 'check_in' };
 type ProfileItemHeaders = { type: 'profile' };
 type ProfileChunkItemHeaders = { type: 'profile_chunk' };
 type SpanItemHeaders = { type: 'span' };
+type LogItemHeaders = { type: 'otel_log' };
 type RawSecurityHeaders = { type: 'raw_security'; sentry_release?: string; sentry_environment?: string };
 
 export type EventItem = BaseEnvelopeItem<EventItemHeaders, Event>;
@@ -101,6 +104,7 @@ export type FeedbackItem = BaseEnvelopeItem<FeedbackItemHeaders, FeedbackEvent>;
 export type ProfileItem = BaseEnvelopeItem<ProfileItemHeaders, Profile>;
 export type ProfileChunkItem = BaseEnvelopeItem<ProfileChunkItemHeaders, ProfileChunk>;
 export type SpanItem = BaseEnvelopeItem<SpanItemHeaders, Partial<SpanJSON>>;
+export type LogItem = BaseEnvelopeItem<LogItemHeaders, Log>;
 export type RawSecurityItem = BaseEnvelopeItem<RawSecurityHeaders, LegacyCSPReport>;
 
 export type EventEnvelopeHeaders = { event_id: string; sent_at: string; trace?: Partial<DynamicSamplingContext> };
@@ -109,6 +113,7 @@ type CheckInEnvelopeHeaders = { trace?: DynamicSamplingContext };
 type ClientReportEnvelopeHeaders = BaseEnvelopeHeaders;
 type ReplayEnvelopeHeaders = BaseEnvelopeHeaders;
 type SpanEnvelopeHeaders = BaseEnvelopeHeaders & { trace?: DynamicSamplingContext };
+type LogEnvelopeHeaders = BaseEnvelopeHeaders & { trace?: DynamicSamplingContext };
 
 export type EventEnvelope = BaseEnvelope<
   EventEnvelopeHeaders,
@@ -121,6 +126,7 @@ export type CheckInEnvelope = BaseEnvelope<CheckInEnvelopeHeaders, CheckInItem>;
 export type SpanEnvelope = BaseEnvelope<SpanEnvelopeHeaders, SpanItem>;
 export type ProfileChunkEnvelope = BaseEnvelope<BaseEnvelopeHeaders, ProfileChunkItem>;
 export type RawSecurityEnvelope = BaseEnvelope<BaseEnvelopeHeaders, RawSecurityItem>;
+export type LogEnvelope = BaseEnvelope<LogEnvelopeHeaders, LogItem>;
 
 export type Envelope =
   | EventEnvelope
@@ -130,6 +136,7 @@ export type Envelope =
   | ReplayEnvelope
   | CheckInEnvelope
   | SpanEnvelope
-  | RawSecurityEnvelope;
+  | RawSecurityEnvelope
+  | LogEnvelope;
 
 export type EnvelopeItem = Envelope[1][number];
diff --git a/packages/core/src/types-hoist/index.ts b/packages/core/src/types-hoist/index.ts
index 524856d514c9..95bc5fc55bd4 100644
--- a/packages/core/src/types-hoist/index.ts
+++ b/packages/core/src/types-hoist/index.ts
@@ -110,6 +110,7 @@ export type {
   TraceFlag,
 } from './span';
 export type { SpanStatus } from './spanStatus';
+export type { Log, LogAttribute, LogSeverityLevel, LogAttributeValueType } from './log';
 export type { TimedEvent } from './timedEvent';
 export type { StackFrame } from './stackframe';
 export type { Stacktrace, StackParser, StackLineParser, StackLineParserFn } from './stacktrace';
diff --git a/packages/core/src/types-hoist/log.ts b/packages/core/src/types-hoist/log.ts
new file mode 100644
index 000000000000..45df68008315
--- /dev/null
+++ b/packages/core/src/types-hoist/log.ts
@@ -0,0 +1,64 @@
+export type LogSeverityLevel = 'trace' | 'debug' | 'info' | 'warn' | 'error' | 'fatal' | 'critical';
+
+export type LogAttributeValueType =
+  | {
+      stringValue: string;
+    }
+  | {
+      intValue: number;
+    }
+  | {
+      boolValue: boolean;
+    }
+  | {
+      doubleValue: number;
+    };
+
+export type LogAttribute = {
+  key: string;
+  value: LogAttributeValueType;
+};
+
+export interface Log {
+  /**
+   * The severity level of the log.
+   *
+   * Allowed values are, from highest to lowest:
+   * `critical`, `fatal`, `error`, `warn`, `info`, `debug`, `trace`.
+   *
+   * The log level changes how logs are filtered and displayed.
+   * Critical level logs are emphasized more than trace level logs.
+   */
+  severityText?: LogSeverityLevel;
+
+  /**
+   * The severity number - generally higher severity are levels like 'error' and lower are levels like 'debug'
+   */
+  severityNumber?: number;
+
+  /**
+   * The trace ID for this log
+   */
+  traceId?: string;
+
+  /**
+   * The message to be logged - for example, 'hello world' would become a log like '[INFO] hello world'
+   */
+  body: {
+    stringValue: string;
+  };
+
+  /**
+   * Arbitrary structured data that stores information about the log - e.g., userId: 100.
+   */
+  attributes?: LogAttribute[];
+
+  /**
+   * This doesn't have to be explicitly specified most of the time. If you need to set it, the value
+   * is the number of seconds since midnight on January 1, 1970 ("unix epoch time")
+   *
+   * @summary A timestamp representing when the log occurred.
+   * @link https://develop.sentry.dev/sdk/event-payloads/breadcrumbs/#:~:text=is%20info.-,timestamp,-(recommended)
+   */
+  timeUnixNano?: string;
+}
diff --git a/packages/core/src/utils-hoist/envelope.ts b/packages/core/src/utils-hoist/envelope.ts
index 46512850cefc..9655f9312579 100644
--- a/packages/core/src/utils-hoist/envelope.ts
+++ b/packages/core/src/utils-hoist/envelope.ts
@@ -223,6 +223,7 @@ const ITEM_TYPE_TO_DATA_CATEGORY_MAP: Record<EnvelopeItemType, DataCategory> = {
   feedback: 'feedback',
   span: 'span',
   raw_security: 'security',
+  otel_log: 'log_item',
 };
 
 /**