The Tonight Show with Jay Leno / Season 12 ▦ Season guide The Tonight Show with Jay Leno: Season 12 225 episodes Premiered Jun 2, 2003 Updated Sep 25, 2026 Spoiler-safe Previously on The Tonight Show with Jay Leno Season 12 Lore Primer Key plot threads, lore context, and character stakes you need to remember before diving into this season. ⚡ Directly follows the overarching narrative developments of The Tonight Show with Jay Leno Season 11. ⚡ Faction dynamics and core character alliances shift under escalating external stakes. ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings. ⚡ Sets up serialized story arcs that build directly toward the climactic season finale. Advertisement Season 12 Episodes Episode Guide 🛡️ SPOILER SHIELD Season 12 Progress Shield All Safe I'm Watching Caught Up Season: Season 12 Last Watched: None (Not started) Episode 1 Episode 2 Episode 3 Episode 4 Episode 5 Episode 6 Episode 7 Episode 8 Episode 9 Episode 10 Episode 11 Episode 12 Episode 13 Episode 14 Episode 15 Episode 16 Episode 17 Episode 18 Episode 19 Episode 20 Episode 21 Episode 22 Episode 23 Episode 24 Episode 25 Episode 26 Episode 27 Episode 28 Episode 29 Episode 30 Episode 31 Episode 32 Episode 33 Episode 34 Episode 35 Episode 36 Episode 37 Episode 38 Episode 39 Episode 40 Episode 41 Episode 42 Episode 43 Episode 44 Episode 45 Episode 46 Episode 47 Episode 48 Episode 49 Episode 50 Episode 51 Episode 52 Episode 53 Episode 54 Episode 55 Episode 56 Episode 57 Episode 58 Episode 59 Episode 60 Episode 61 Episode 62 Episode 63 Episode 64 Episode 65 Episode 66 Episode 67 Episode 68 Episode 69 Episode 70 Episode 71 Episode 72 Episode 73 Episode 74 Episode 75 Episode 76 Episode 77 Episode 78 Episode 79 Episode 80 Episode 81 Episode 82 Episode 83 Episode 84 Episode 85 Episode 86 Episode 87 Episode 88 Episode 89 Episode 90 Episode 91 Episode 92 Episode 93 Episode 94 Episode 95 Episode 96 Episode 97 Episode 98 Episode 99 Episode 100 Episode 101 Episode 102 Episode 103 Episode 104 Episode 105 Episode 106 Episode 107 Episode 108 Episode 109 Episode 110 Episode 111 Episode 112 Episode 113 Episode 114 Episode 115 Episode 116 Episode 117 Episode 118 Episode 119 Episode 120 Episode 121 Episode 122 Episode 123 Episode 124 Episode 125 Episode 126 Episode 127 Episode 128 Episode 129 Episode 130 Episode 131 Episode 132 Episode 133 Episode 134 Episode 135 Episode 136 Episode 137 Episode 138 Episode 139 Episode 140 Episode 141 Episode 142 Episode 143 Episode 144 Episode 145 Episode 146 Episode 147 Episode 148 Episode 149 Episode 150 Episode 151 Episode 152 Episode 153 Episode 154 Episode 155 Episode 156 Episode 157 Episode 158 Episode 159 Episode 160 Episode 161 Episode 162 Episode 163 Episode 164 Episode 165 Episode 166 Episode 167 Episode 168 Episode 169 Episode 170 Episode 171 Episode 172 Episode 173 Episode 174 Episode 175 Episode 176 Episode 177 Episode 178 Episode 179 Episode 180 Episode 181 Episode 182 Episode 183 Episode 184 Episode 185 Episode 186 Episode 187 Episode 188 Episode 189 Episode 190 Episode 191 Episode 192 Episode 193 Episode 194 Episode 195 Episode 196 Episode 197 Episode 198 Episode 199 Episode 200 Episode 201 Episode 202 Episode 203 Episode 204 Episode 205 Episode 206 Episode 207 Episode 208 Episode 209 Episode 210 Episode 211 Episode 212 Episode 213 Episode 214 Episode 215 Episode 216 Episode 217 Episode 218 Episode 219 Episode 220 Episode 221 Episode 222 Episode 223 Episode 224 Episode 225 Future titles & synopses blurred. Tap "Reveal" on any card to peek. Binge Efficiency Engine Season 12: Filler vs. Essential Canon Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests. 99% Mytharc (3): Crucial lore & season climaxes Core (222): Character development & subplots Side Quest (0): Standalone / filler Show All (225) Crucial Mytharc (3) Essential Canon (225) S12·E1 Mytharc Show #2497 Jun 2, 2003 S12·E2 Core Show #2498 Jun 3, 2003 S12·E3 Core Show #2499 Jun 4, 2003 S12·E4 Core Show #2500 Jun 5, 2003 S12·E5 Core Show #2501 Jun 6, 2003 S12·E6 Core Show #2502 Jun 9, 2003 S12·E7 Core Show #2503 Jun 10, 2003 S12·E8 Core Show #2504 Jun 11, 2003 S12·E9 Core Show #2505 Jun 12, 2003 S12·E10 Core Show #2506 Jun 13, 2003 S12·E11 Core Show #2507 Jun 16, 2003 S12·E12 Core Show #2508 Jun 17, 2003 S12·E13 Core Show #2509 Jun 18, 2003 S12·E14 Core Show #2510 Jun 19, 2003 S12·E15 Core Show #2511 Jun 20, 2003 S12·E16 Core Show #2512 Jun 23, 2003 S12·E17 Core Show #2513 Jun 24, 2003 S12·E18 Core Show #2514 Jun 25, 2003 S12·E19 Core Show #2515 Jun 26, 2003 S12·E20 Core Show #2516 Jun 27, 2003 S12·E21 Core Show #2517 Jul 7, 2003 S12·E22 Core Show #2518 Jul 8, 2003 S12·E23 Core Show #2519 Jul 9, 2003 S12·E24 Core Show #2520 Jul 10, 2003 S12·E25 Core Show #2521 Jul 11, 2003 S12·E26 Core Show #2522 Jul 14, 2003 S12·E27 Core Show #2523 Jul 15, 2003 S12·E28 Core Show #2524 Jul 16, 2003 S12·E29 Core Show #2525 Jul 17, 2003 S12·E30 Core Show #2526 Jul 18, 2003 S12·E31 Core Show #2527 Jul 21, 2003 S12·E32 Core Show #2528 Jul 22, 2003 S12·E33 Core Show #2529 Jul 23, 2003 S12·E34 Core Show #2530 Jul 24, 2003 S12·E35 Core Show #2531 Jul 25, 2003 S12·E36 Core Show #2532 Jul 28, 2003 S12·E37 Core Show #2533 Jul 29, 2003 S12·E38 Core Show #2534 Jul 30, 2003 S12·E39 Core Show #2535 Jul 31, 2003 S12·E40 Core Show #2536 Aug 1, 2003 S12·E41 Core Show #2537 Aug 4, 2003 S12·E42 Core Show #2538 Aug 5, 2003 S12·E43 Core Show #2539 Aug 6, 2003 S12·E44 Core Show #2540 Aug 7, 2003 S12·E45 Core Show #2541 Aug 8, 2003 S12·E46 Core Show #2542 Aug 11, 2003 S12·E47 Core Show #2543 Aug 12, 2003 S12·E48 Core Show #2544 Aug 13, 2003 S12·E49 Core Show #2545 Aug 14, 2003 S12·E50 Core Show #2546 Aug 15, 2003 S12·E51 Core Show #2547 Sep 2, 2003 S12·E52 Core Show #2548 Sep 3, 2003 S12·E53 Core Show #2549 Sep 4, 2003 S12·E54 Core Show #2550 Sep 5, 2003 S12·E55 Core Show #2551 Sep 8, 2003 S12·E56 Core Show #2552 Sep 9, 2003 S12·E57 Core Show #2553 Sep 10, 2003 S12·E58 Core Show #2554 Sep 11, 2003 S12·E59 Core Show #2555 Sep 12, 2003 S12·E60 Core Show #2556 Sep 15, 2003 S12·E61 Core Show #2557 Sep 16, 2003 S12·E62 Core Show #2558 Sep 17, 2003 S12·E63 Core Show #2559 Sep 18, 2003 S12·E64 Core Show #2560 Sep 19, 2003 S12·E65 Core Show #2561 Sep 22, 2003 S12·E66 Core Show #2562 Sep 23, 2003 S12·E67 Core Show #2563 Sep 24, 2003 S12·E68 Core Show #2564 Sep 25, 2003 S12·E69 Core Show #2565 Sep 26, 2003 S12·E70 Core Show #2566 Sep 29, 2003 S12·E71 Core Show #2567 Sep 30, 2003 S12·E72 Core Show #2568 Oct 1, 2003 S12·E73 Core Show #2569 Oct 2, 2003 S12·E74 Core Show #2570 Oct 3, 2003 S12·E75 Core Show #2571 Oct 6, 2003 S12·E76 Core Show #2572 Oct 7, 2003 S12·E77 Core Show #2573 Oct 8, 2003 S12·E78 Core Show #2574 Oct 9, 2003 S12·E79 Core Show #2575 Oct 10, 2003 S12·E80 Core Show #2576 Oct 13, 2003 S12·E81 Core Show #2577 Oct 14, 2003 S12·E82 Core Show #2578 Oct 15, 2003 S12·E83 Core Show #2579 Oct 16, 2003 S12·E84 Core Show #2580 Oct 17, 2003 S12·E85 Core Show #2581 Oct 27, 2003 S12·E86 Core Show #2582 Oct 28, 2003 S12·E87 Core Show #2583 Oct 29, 2003 S12·E88 Core Show #2584 Oct 30, 2003 S12·E89 Core Show #2585 Oct 31, 2003 S12·E90 Core Show #2586 Nov 3, 2003 S12·E91 Core Show #2587 Nov 4, 2003 S12·E92 Core Show #2588 Nov 5, 2003 S12·E93 Core Show #2589 Nov 6, 2003 S12·E94 Core Show #2590 Nov 7, 2003 S12·E95 Core Show #2591 Nov 10, 2003 S12·E96 Core Show #2592 Nov 11, 2003 S12·E97 Core Show #2593 Nov 12, 2003 S12·E98 Core Show #2594 Nov 13, 2003 S12·E99 Core Show #2595 Nov 14, 2003 S12·E100 Core Show #2596 Nov 17, 2003 S12·E101 Core Show #2597 Nov 18, 2003 S12·E102 Core Show #2598 Nov 19, 2003 S12·E103 Core Show #2599 Nov 20, 2003 S12·E104 Core Show #2600 Nov 21, 2003 S12·E105 Core Show #2601 Nov 24, 2003 S12·E106 Core Show #2602 Nov 25, 2003 S12·E107 Core Show #2603 Nov 26, 2003 S12·E108 Core Show #2604 Nov 27, 2003 S12·E109 Core Show #2605 Dec 1, 2003 S12·E110 Core Show #2606 Dec 2, 2003 S12·E111 Core Show #2607 Dec 3, 2003 S12·E112 Core Show #2608 Dec 4, 2003 S12·E113 Core Show #2609 Dec 5, 2003 S12·E114 Core Show #2610 Dec 8, 2003 S12·E115 Core Show #2611 Dec 9, 2003 S12·E116 Core Show #2612 Dec 10, 2003 S12·E117 Core Show #2613 Dec 11, 2003 S12·E118 Core Show #2614 Dec 12, 2003 S12·E119 Core Show #2615 Dec 15, 2003 S12·E120 Core Show #2616 Dec 16, 2003 S12·E121 Core Show #2617 Dec 17, 2003 S12·E122 Core Show #2618 Dec 18, 2003 S12·E123 Core Show #2619 Dec 19, 2003 S12·E124 Core Show #2620 Dec 22, 2003 S12·E125 Core Show #2621 Dec 23, 2003 S12·E126 Core Show #2622 Dec 26, 2003 S12·E127 Core Show #2623 Dec 29, 2003 S12·E128 Core Show #2624 Dec 30, 2003 S12·E129 Core Show #2625 Dec 31, 2003 S12·E130 Core Show #2626 Jan 2, 2004 S12·E131 Core Show #2627 Jan 12, 2004 S12·E132 Core Show #2628 Jan 13, 2004 S12·E133 Core Show #2629 Jan 14, 2004 S12·E134 Core Show #2630 Jan 15, 2004 S12·E135 Core Show #2631 Jan 16, 2004 S12·E136 Core Show #2632 Jan 19, 2004 S12·E137 Core Show #2633 Jan 20, 2004 S12·E138 Core Show #2634 Jan 21, 2004 S12·E139 Core Show #2635 Jan 22, 2004 S12·E140 Core Show #2636 Jan 23, 2004 S12·E141 Core Show #2637 Jan 26, 2004 S12·E142 Core Show #2638 Jan 27, 2004 S12·E143 Core Show #2639 Jan 28, 2004 S12·E144 Core Show #2640 Jan 29, 2004 S12·E145 Core Show #2641 Jan 30, 2004 S12·E146 Core Show #2642 Feb 2, 2004 S12·E147 Core Show #2643 Feb 3, 2004 S12·E148 Core Show #2644 Feb 4, 2004 S12·E149 Core Show #2645 Feb 5, 2004 S12·E150 Core Show #2646 Feb 6, 2004 S12·E151 Core Show #2647 Feb 9, 2004 S12·E152 Core Show #2648 Feb 10, 2004 S12·E153 Core Show #2649 Feb 11, 2004 S12·E154 Core Show #2650 Feb 12, 2004 S12·E155 Core Show #2651 Feb 13, 2004 S12·E156 Core Show #2652 Feb 16, 2004 S12·E157 Core Show #2653 Feb 17, 2004 S12·E158 Core Show #2654 Feb 18, 2004 S12·E159 Core Show #2655 Feb 19, 2004 S12·E160 Core Show #2656 Feb 20, 2004 S12·E161 Core Show #2657 Feb 23, 2004 S12·E162 Core Show #2658 Feb 24, 2004 S12·E163 Core Show #2659 Feb 25, 2004 S12·E164 Core Show #2660 Feb 26, 2004 S12·E165 Core Show #2661 Feb 27, 2004 S12·E166 Core Show #2662 Mar 1, 2004 S12·E167 Core Show #2663 Mar 2, 2004 S12·E168 Core Show #2664 Mar 3, 2004 S12·E169 Core Show #2665 Mar 4, 2004 S12·E170 Core Show #2666 Mar 5, 2004 S12·E171 Core Show #2667 Mar 8, 2004 S12·E172 Core Show #2668 Mar 9, 2004 S12·E173 Core Show #2669 Mar 10, 2004 S12·E174 Core Show #2670 Mar 11, 2004 S12·E175 Core Show #2671 Mar 12, 2004 S12·E176 Core Show #2672 Mar 15, 2004 S12·E177 Core Show #2673 Mar 16, 2004 S12·E178 Core Show #2674 Mar 17, 2004 S12·E179 Core Show #2675 Mar 18, 2004 S12·E180 Core Show #2676 Mar 19, 2004 S12·E181 Core Show #2677 Mar 29, 2004 S12·E182 Core Show #2678 Mar 30, 2004 S12·E183 Core Show #2679 Mar 31, 2004 S12·E184 Core Show #2680 Apr 1, 2004 S12·E185 Core Show #2681 Apr 2, 2004 S12·E186 Core Show #2682 Apr 5, 2004 S12·E187 Core Show #2683 Apr 6, 2004 S12·E188 Core Show #2684 Apr 7, 2004 S12·E189 Core Show #2685 Apr 8, 2004 S12·E190 Core Show #2686 Apr 9, 2004 S12·E191 Core Show #2687 Apr 12, 2004 S12·E192 Core Show #2688 Apr 13, 2004 S12·E193 Core Show #2689 Apr 14, 2004 S12·E194 Core Show #2690 Apr 15, 2004 S12·E195 Core Show #2691 Apr 16, 2004 S12·E196 Core Show #2692 Apr 19, 2004 S12·E197 Core Show #2693 Apr 20, 2004 S12·E198 Core Show #2694 Apr 21, 2004 S12·E199 Core Show #2695 Apr 22, 2004 S12·E200 Core Show #2696 Apr 23, 2004 S12·E201 Core Show #2697 Apr 26, 2004 S12·E202 Core Show #2698 Apr 27, 2004 S12·E203 Core Show #2699 Apr 28, 2004 S12·E204 Core Show #2700 Apr 29, 2004 S12·E205 Core Show #2701 Apr 30, 2004 S12·E206 Core Show #2702 May 3, 2004 S12·E207 Core Show #2703 May 4, 2004 S12·E208 Core Show #2704 May 5, 2004 S12·E209 Core Show #2705 May 6, 2004 S12·E210 Core Show #2706 May 7, 2004 S12·E211 Core Show #2707 May 10, 2004 S12·E212 Core Show #2708 May 11, 2004 S12·E213 Core Show #2709 May 12, 2004 S12·E214 Core Show #2710 May 13, 2004 S12·E215 Core Show #2711 May 14, 2004 S12·E216 Core Show #2712 May 17, 2004 S12·E217 Core Show #2713 May 18, 2004 S12·E218 Core Show #2714 May 19, 2004 S12·E219 Core Show #2715 May 20, 2004 S12·E220 Core Show #2716 May 21, 2004 S12·E221 Core Show #2717 May 24, 2004 S12·E222 Core Show #2718 May 25, 2004 S12·E223 Core Show #2719 May 26, 2004 S12·E224 Mytharc Show #2720 May 27, 2004 S12·E225 Mytharc Show #2721 May 28, 2004