The new products include items from Canadian meat-alternative brand Gardein, own-brand pizzas from Sainsbury's Love Your Veg range, seitan bacon by Upton's Naturals, and Sophie's Kitchen Prawns and Salmon.
They will take the supermarket's offering to more than 100 products - as customer demand for plant-based options continues to skyrocket.
Speaking about adding vegan options to its shelves earlier this year, James Hamilton, Meat-Free and Ready Meals Buyer at Sainsbury's, revealed that demand was surging.
"We are seeing an increasing interest from our customers in plant-based foods, with sales of our current meat-free range growing 20 percent each week," he said.
"We're always exploring new ways to offer even greater choice, quality, and value."
Products from Sainsbury's Love Your Veg range, including Shroomballs with Jackfruit, Jackfruit Quarter Pounders, 'Shroompups' Vegan Cocktail Sausages, Vegan Chorizo-Style Shroomdogs, and Plain Falafels will launch in 300 branches of the store and online from December 31. The products range from £1.50-£3.
Also launching at this time are Upton's Naturals Seitan Bacon and Italian Seitan (both £3), Vivera Veggie Greek Kebab Gyros (£2.50), and Naturli Pea Protein Mince (£3).
Sainsbury's new Love Your Veg pizzas include BBQ Jackfruit & Mushroom, BBQ Jackfruit & Mushroom, and Roasted Butternut & Charred Broccoli Pizza (£3.80) will also launch on these dates.
Frozen vegan food
The frozen vegan products including Sophie's Kitchen fish alternatives (£3.50), and Lazy Vegan options - Mexicana Meal, Provencale Meal, Pulled Peaz Chunks in Natural and Mediterranean (£2.25) - will launch in 75 stores from January 2 and online from January 21.
The Gardein products will also launch on these dates. They all cost £3.50 and include Golden Fishless Filets, Seven Grain Crispy Tenders, Mandarin Orange Crispy Chick'n, Sizzling Szechuan Beefless Strips, and Classic Meatless Balls.