Can You Use HDMI on a CRT TV with Xbox 360?

No. CRT TVs do not have HDMI ports. The Xbox 360's HDMI output is incompatible with CRT displays, which only accept analog signals via:

• Composite (RCA): Yellow (video) + Red/White (audio) — included with every Xbox 360.
• S-Video: Better color separation than composite; requires separate cable.
• Component (YPbPr): Red/Green/Blue video + Red/White audio — best analog quality; supports 480p/720p/1080i. Xbox 360 Component HD AV Cable sold separately.
• VGA: For CRT monitors (not TVs); supports progressive resolutions up to 1920×1080.

Best Connection for Xbox 360 on CRT

1. Component (YPbPr): Highest quality analog; enables 480p/720p/1080i if your CRT is HD-capable (rare, but some late-model Sony WEGA / Mitsubishi Diamondtron support it).
2. S-Video: Good middle ground if component isn't an option.
3. Composite: Works on all CRTs but lowest quality (interlaced 480i only).

Note: No adapter converts HDMI → analog for CRT use without an active powered converter box (HDMI to Component/Composite), which adds cost, latency, and potential signal issues. Just use the correct native cable.